Patented

RAM® Finger-Grip™ Universal Mount with Drill-Down Base

Part#: RAM-B-138-UN4
UPC: 793442905636

Compatibility

2 Way

Radios

Amcrest

ATR-22

Brother

RuggedJet Go 2035B RuggedJet Go 2055WB

BaoFeng

BF-888S BF-F8+ BF-F8HP DMR-6X2 MURS-V1 UV-5R UV-82C UV-82HP UV-82L UV-82X

Baofeng

Black UV-5R V2 GMRS-V1 UV5RA UV-5X3 Yellow BF-F9 V2

Garmin

Alpha 100 Astro 900 System Delta Sport XC Delta Upland XC Delta XC eTrex Touch 25 eTrex Touch 35 eTrex Touch 35t GPSMAP 66 Series inReach Explorer+ inReach SE+ Montana 700 Montana 700i Montana 750 Montana 750i PRO Control Sport PRO

Honeywell

CT40

Midland

75-822 EX37VP HH50B LXT118 LXT118VP LXT500VP3 LXT535VP3 LXT560VP3 LXT600VP3 LXT630VP3 LXT633VP3 X-Talker T10 X-Talker T20 X-Talker T31VP X-Talker T35VP X-Talker T51VP3 X-Talker T55VP3 X-Talker T61VP3 X-Talker T65VP3 X-Talker T71VP3 X-Talker T75VP3 X-Talker T77VP5

Spot

X

TYT

DM-UVF10 MD-2017 MD-280 MD-380 MD-380G MD-390 MD-446 Q1 TC-2000A TC-3000A TC-3000B TC-5000 TC-7000 TC-8000 TH-446 TH-6200 TH-F5 TH-F7 TH-UV6R TH-UV818 TH-UV8R TH-UVF1 TH-UVF8D TH-UVF9 TH-UVF9D TK-918 TK-928 TK-938 TYT-777 TYT-800 W700 X1 X2

Venterior

VT-FF001/E VT-FF002 VT-FF003 VT-FF04

Wouxun

KG-659E KG-699E KG-703E KG-819 KG-828 KG-829 KG-928 KG-939 KG-958 KG-959 KG-968 KG-988 KG-D2000 KG-D900 KG-D901 KG-UV66 KG-UV8D KG-UV9D KG-UV9K KG-UVA1 KG-V55 KG-WT18

Yaesu

FT-25R FT-270R FT2DR FT-4VR FT-4XR FT-60R FT-65R FT-70DR FT-70DR VX-6R

Zebra

TC21 TC26 EC30

Kit Components

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$79.99

Overview

The RAM® Finger-Grip™ is a universal holder that can accommodate a wide range of devices including GPS, handheld radios, phones, bluetooth speakers, and much more. Included with the holder are three sets of four flexible rubber-coated fingers to grip your device. The main backing plate consists of multiple slotted holes where any set of finger grips can be positioned to hold your device firmly. When positioned correctly, your device can easily wedge in and out of the holder; suited for any rough environment. Also included are two sets of optional top and bottom supports to add even more stability to your device if needed. The RAM-B-138-UN4U also includes a medium length B-size arm and a 2.5" diameter round plate with Universal AMPS hole pattern.

Features

  • Unviversal holder with flexible rubber-coated fingers to provide a secure grip of your device
  • Includes drill-down 2.5" round base and medium length, B size RAM® double socket arm; ball and socket technology allows for near-infinite adjustability
  • Made of powder-coated, marine-grade aluminum, stainless steel components, and high-strength composite for durability and reliability in the most demanding environments
  • Backed by a lifetime warranty

hardware included:

Assembly Hardware

holder dimensions:

Height Range: 7.25" max (using optional supports)
Width Range: 1.25" - 3.5"
Max Depth: 1.5"

socket to socket length:

3"

hole pattern:

4-Hole AMPS: 1.181" x 1.496"
3-Hole 120-Degree: 1.812" Diameter

plate size:

2.5" Diameter

ball size:

B Size (1")

weight capacity:

Standard Use: 2 lbs
Heavy-Duty Use: 1 lb

materials:

Marine-grade aluminum
High strength composite

packaging type:

Retail Bag

Weight:

1.05 lb

Return Policy:

All products purchased from RAM® can be returned within 30 days with no restocking fee (return shipping not provided). See full return policy here.

Print

Instructions

QUESTIONS & ANSWERS

Have a Question?

Ask a Question
  • What size screws are needed for the holes on this ball plate?

    The most common screw sizes are #8, #10, M4 and M5 screws. However, if you are pairing this with any RAM® Holder, the holder will come with the necessary hardware to connect to your mount.

RAM® Finger-Grip™ Universal Mount with Drill-Down Base
$79.99

Size Guide

Ball sizes
  • A Size 0.56" ball
  • B Size — this product 1" ball
  • C Size 1.5" ball
  • D Size 2.25" ball
  • E Size 3.38" ball

Every RAM® mount is built around a rubber ball and socket system. The ball size sets how much weight the mount can carry. Match it to your device for smooth adjustment with a rock-solid hold.

RAM Mounts ball size specifications and typical uses
Size Ball Diameter Max Load* Best For
A0.56" (14.3 mm)0.5 lbAction cameras and other ultra-light devices
B — this product1" (25.4 mm)2 lbsPhones, GPS units, and small tablets — the most common size
C1.5" (38.1 mm)4 lbsLarge tablets, fish finders, and rougher rides
D2.25" (57.2 mm)6 lbsRugged tablets, laptops, and heavy equipment
E3.38" (85.9 mm)15 lbsLarge displays and demanding aviation or industrial use

*Approximate capacity for a standard ball with a mid-length arm. Shorter arms and steel-reinforced posts increase real-world capacity.

Reading part numbers

The letter after RAM tells you the ball size: RAM-B-166 uses a 1" B ball, while RAM-D-201 uses a 2.25" D ball. C size parts are the exception and carry no letter, so RAM-201U is a C size arm.

Add-on & Accessories

Locking Knobs
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Holder Accessories
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