Copyright © 2025 National Products Inc. Seattle, Washington. All rights reserved.

rammount.com
1-800-497-7479
sales@rammount.com
RAM® X-Grip® Universal Holder for 7"-8" Tablets with Ball - B Size | |
---|---|
Part #:
RAM-HOL-UN8BU
UPC:
793442935244
Patented
Features
|
![]() |
Product Information | |
---|---|
Overview | The RAM-HOL-UN8B consists of a spring loaded cradle and 1" rubber ball connected to the back of the base. Included are extra easy access grip knobs, located on the back of the cradle for quick release of your tablet. The RAM-HOL-UN8B expands and contracts for perfect fit of most 7"-8" tablets. The X-Grip® includes a device tether recommended for outdoor applications. The cradle is compatible with handheld devices that will fit the dimensions listed below. It is important to verify the dimensions of your handheld device with a case/sleeve/skin when determining the overall size. |
Specifications | |
---|---|
hardware included | (1) Optional Tether (1) Glue Tube for Rubber Caps |
holder dimensions | Width Range: 2.5" - 5.75" Depth Range: .875" max |
ball size | B Size (1") |
weight capacity | Standard Use: 2 lbs Heavy-Duty Use: 1 lb |
materials | High strength composite Stainless steel |
packaging type | Poly Bag |
Weight | 0.34 lb |









The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured by a multitude of interchangeable components to fit your specific needs.

A Size
Holds .5 lbs.
Trail Cameras

B Size
Holds 2 lbs.
Phones, Action Cameras, Light Duty Tablets

C Size
Holds 4 lbs.
Fishfinders, Heavy Duty Tablets

D Size
Holds 6 lbs.
Heavy Monitors

E Size
Holds 15 lbs.
Heavy Monitors
The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.
Size | A Size | B Size | C Size | D Size | E Size |
---|---|---|---|---|---|
Short Arm | Overall Length N/A |
Overall Length 2.42" |
Overall Length 3.56" |
Overall Length 5.69" |
Overall Length 5.69" |
Socket-to-Socket Length N/A |
Socket-to-Socket Length 1.75" |
Socket-to-Socket Length 2.5" |
Socket-to-Socket Length 4.66" |
Socket-to-Socket Length 4.66" |
|
Medium Arm | Overall Length 2.42" |
Overall Length 3.73" |
Overall Length 5.69" |
Overall Length 8.44" |
Overall Length 12.63" |
Socket-to-Socket Length 1.75" |
Socket-to-Socket Length 3" |
Socket-to-Socket Length 4.66" |
Socket-to-Socket Length 6.88" |
Socket-to-Socket Length 9.88" |
|
Long Arm | Overall Length 6" |
Overall Length 6" |
Overall Length 9.13" |
Overall Length 12.98" |
Overall Length N/A |
Socket-to-Socket Length 5.31" |
Socket-to-Socket Length 5.31" |
Socket-to-Socket Length 8" |
Socket-to-Socket Length 11.41" |
Socket-to-Socket Length N/A |
Compatible Devices
Amazon
Fire 7
Fire HD 8
Kindle
Kindle Oasis
Kindle Paperwhite
Kindle Voyage
Apple
iPad mini (1st Generation)
iPad mini 2
iPad mini 3
iPad mini 4
iPad mini 5
iPad mini 6
iPad mini (A17 Pro)
ASUS
MeMO Pad 8
VivoTab 8
ZenPad 8.0
ZenPad C 7.0
ZenPad S 8.0
ZenPad Z8
ZenPad Z8s
Dell
Venue 7
Venue 7 (2014)
Venue 7 3741
Venue 8
Venue 8 (2014)
Venue 8 7840
Venue 8 Pro
Venue 8 Pro 5855
Nexus 7
HP
Pro Tablet 408
Slate 7
Huawei
MediaPad M3
MediaPad M3 Lite
MediaPad T1 7.0
MediaPad T1 8.0
MediaPad T3 7
MediaPad T3 8
Lenovo
Ideapad Miix 300
IdeaTab A1000
IdeaTab A2107
IdeaTab A3000
Tab 2 A7-10
Tab 2 A7-20
Tab 2 A7-30
Tab 2 A8
Tab 4 8
Tab 4 8 Plus
Tab 7 Essential
Tab A7-30
Tab A7-40
Tab A7-50
Tab A8-50
Tab M8 HD
Tab M8 4th Gen
Tab S8
Tab3 7
Tab3 8
Yoga Tablet 8
LG
G Pad 7.0
G Pad F 8.0 (2nd Gen)
G Pad F2 8.0
G Pad II 8.0
G Pad X 8.0
G Pad X II 8.0
Nvidia
Shield Tablet
Nokia
T10
Rand
McNally OverDryve 7
McNally OverDryve 7 Pro
McNally OverDryve 7 RV
McNally OverDryve 7c
McNally OverDryve 8 Pro
McNally Road Explorer 7
McNally Road Explorer 70
McNally RV Tablet 70
McNally RVND 7
McNally TND 740
McNally TND Tablet 70
McNally TND Tablet 80
Samsung
Galaxy Tab 2 7.0
Galaxy Tab 3 7.0
Galaxy Tab 3 8.0
Galaxy Tab 3 Lite 7.0
Galaxy Tab 4 7.0
Galaxy Tab 4 8.0
Galaxy Tab 7.7
Galaxy Tab A 7.0
Galaxy Tab A 7.0
Galaxy Tab A 8.0
Galaxy Tab A 8.0 (2017)
Galaxy Tab A 8.0 (2018)
Galaxy Tab A 8.0 (2019)
Galaxy Tab A 8.4
Galaxy Tab A7 Lite 8.7
Galaxy Tab Active2
Galaxy Tab E 7.0
Galaxy Tab E 8.0
Galaxy Tab Pro 8.4
Galaxy Tab S 8.4
Galaxy Tab S2 8.0
Social
Mobile Rhino T80
Vankyo
MatrixPad Z1 7"
Kit Components

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured by a multitude of interchangeable components to fit your specific needs.

A Size
Holds .5 lbs.
Trail Cameras

B Size
Holds 2 lbs.
Phones, Action Cameras, Light Duty Tablets

C Size
Holds 4 lbs.
Fishfinders, Heavy Duty Tablets

D Size
Holds 6 lbs.
Heavy Monitors

E Size
Holds 15 lbs.
Heavy Monitors
The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.
Size | A Size | B Size | C Size | D Size | E Size |
---|---|---|---|---|---|
Short Arm | Overall Length N/A |
Overall Length 2.42" |
Overall Length 3.56" |
Overall Length 5.69" |
Overall Length 5.69" |
Socket-to-Socket Length N/A |
Socket-to-Socket Length 1.75" |
Socket-to-Socket Length 2.5" |
Socket-to-Socket Length 4.66" |
Socket-to-Socket Length 4.66" |
|
Medium Arm | Overall Length 2.42" |
Overall Length 3.73" |
Overall Length 5.69" |
Overall Length 8.44" |
Overall Length 12.63" |
Socket-to-Socket Length 1.75" |
Socket-to-Socket Length 3" |
Socket-to-Socket Length 4.66" |
Socket-to-Socket Length 6.88" |
Socket-to-Socket Length 9.88" |
|
Long Arm | Overall Length 6" |
Overall Length 6" |
Overall Length 9.13" |
Overall Length 12.98" |
Overall Length N/A |
Socket-to-Socket Length 5.31" |
Socket-to-Socket Length 5.31" |
Socket-to-Socket Length 8" |
Socket-to-Socket Length 11.41" |
Socket-to-Socket Length N/A |
Compatible Devices
Amazon
Fire 7
Fire HD 8
Kindle
Kindle Oasis
Kindle Paperwhite
Kindle Voyage
Apple
iPad mini (1st Generation)
iPad mini 2
iPad mini 3
iPad mini 4
iPad mini 5
iPad mini 6
iPad mini (A17 Pro)
ASUS
MeMO Pad 8
VivoTab 8
ZenPad 8.0
ZenPad C 7.0
ZenPad S 8.0
ZenPad Z8
ZenPad Z8s
Dell
Venue 7
Venue 7 (2014)
Venue 7 3741
Venue 8
Venue 8 (2014)
Venue 8 7840
Venue 8 Pro
Venue 8 Pro 5855
Nexus 7
HP
Pro Tablet 408
Slate 7
Huawei
MediaPad M3
MediaPad M3 Lite
MediaPad T1 7.0
MediaPad T1 8.0
MediaPad T3 7
MediaPad T3 8
Lenovo
Ideapad Miix 300
IdeaTab A1000
IdeaTab A2107
IdeaTab A3000
Tab 2 A7-10
Tab 2 A7-20
Tab 2 A7-30
Tab 2 A8
Tab 4 8
Tab 4 8 Plus
Tab 7 Essential
Tab A7-30
Tab A7-40
Tab A7-50
Tab A8-50
Tab M8 HD
Tab M8 4th Gen
Tab S8
Tab3 7
Tab3 8
Yoga Tablet 8
LG
G Pad 7.0
G Pad F 8.0 (2nd Gen)
G Pad F2 8.0
G Pad II 8.0
G Pad X 8.0
G Pad X II 8.0
Nvidia
Shield Tablet
Nokia
T10
Rand
McNally OverDryve 7
McNally OverDryve 7 Pro
McNally OverDryve 7 RV
McNally OverDryve 7c
McNally OverDryve 8 Pro
McNally Road Explorer 7
McNally Road Explorer 70
McNally RV Tablet 70
McNally RVND 7
McNally TND 740
McNally TND Tablet 70
McNally TND Tablet 80
Samsung
Galaxy Tab 2 7.0
Galaxy Tab 3 7.0
Galaxy Tab 3 8.0
Galaxy Tab 3 Lite 7.0
Galaxy Tab 4 7.0
Galaxy Tab 4 8.0
Galaxy Tab 7.7
Galaxy Tab A 7.0
Galaxy Tab A 7.0
Galaxy Tab A 8.0
Galaxy Tab A 8.0 (2017)
Galaxy Tab A 8.0 (2018)
Galaxy Tab A 8.0 (2019)
Galaxy Tab A 8.4
Galaxy Tab A7 Lite 8.7
Galaxy Tab Active2
Galaxy Tab E 7.0
Galaxy Tab E 8.0
Galaxy Tab Pro 8.4
Galaxy Tab S 8.4
Galaxy Tab S2 8.0
Social
Mobile Rhino T80
Vankyo
MatrixPad Z1 7"
Kit Components

Get a notification as soon as this product is available by signing up below!
Thank you for your interest in RAM-HOL-UN8BU!
We'll email you once the item is available.
Overview
The RAM-HOL-UN8B consists of a spring loaded cradle and 1" rubber ball connected to the back of the base. Included are extra easy access grip knobs, located on the back of the cradle for quick release of your tablet. The RAM-HOL-UN8B expands and contracts for perfect fit of most 7"-8" tablets. The X-Grip® includes a device tether recommended for outdoor applications. The cradle is compatible with handheld devices that will fit the dimensions listed below. It is important to verify the dimensions of your handheld device with a case/sleeve/skin when determining the overall size.
Features
- Spring-loaded 'X' design with rubber caps sports great holding power without hiding your tablet; fits most 7"-8" tablets and includes optional device tether for peace of mind during rugged use
- Easy access grip knobs on the back of the holder allow for the quick release of your tablet
- Includes 1" B size rubber ball compatible with any B size RAM® Mounts double socket arm; ball and socket technology allows for near-infinite adjustability
- Backed by a lifetime warranty
hardware included:
(1) Optional Tether
(1) Glue Tube for Rubber Caps
holder dimensions:
Width Range: 2.5" - 5.75"
Depth Range: .875" max
ball size:
B Size (1")
weight capacity:
Standard Use: 2 lbs
Heavy-Duty Use: 1 lb
materials:
High strength composite
Stainless steel
packaging type:
Poly Bag
Weight:
0.34 lb
Questions & Answers
Have a Question?
-
Can I get this cradle with a 1.5 inch C ball?
Yes, that would be RAM-HOL-UN8BCU.
-
Will this hold the Samsung fold 3? It is 5 wide by 6.25 tall.
No, RAM does not currently offer a holder that will accommodate the Z Fold style of devices from Samsung.
-
I noticed my tablet can be rotated back and forth about 15 degrees when it is in the X-Grip. Is that normal?
That type of movement is totally normal for the X-Grip. When being used for less rugged applications the small amount of movement allowed is not an issue, but sometimes when traveling at higher speeds or in bumpy environments it can be. If that is causing problems in your application, it is best to use the safety tether which will prevent that type of movement by creating tension between the phone and backplate.
-
Would this cradle fit an iPhone 11 as well - I need to interchange between an iPhone 11 and an 8 inch tablet.
This holder would not be able to keep any phones secure unfortunately. However the ball components are modular and interchangable; if you select any alternate holder here, you can switch this out with the tablet holder whenever you are switching devices.