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RAM® Double Socket Arm with Retention Knob - B Size Short
Part #: RAM-B-201-A-ALA1-KRU UPC: 793442124679

Product Information
Overview	The RAM-B-201-A-ALA1-KRU, SHORT length double socket arm with retention knob, has a socket at both ends that accommodates 1" ball bases. The knob extension allows for easy adjustment of the mount and prevents over loosening of the knob. This socket technology allows for almost infinite adjustment and perfect viewing angles.

Specifications
product dimensions	Overall Length: 2.42"
socket to socket length	1.75"
ball size	B Size (1")
weight capacity	Standard Use: 2 lbs Heavy-Duty Use: 1 lb
materials	Marine-grade aluminum
packaging type	Poly Bag
Weight	0.3 lb

RAM® Double Socket Arm with Retention Knob - B Size Short

Name: RAM® Double Socket Arm with Retention Knob - B Size Short
Brand: RAM Mounts
SKU: RAM-B-201-A-ALA1-KRU
Price: 31.49 USD
Availability: InStock

Part#: RAM-B-201-A-ALA1-KRU

UPC: 793442124679

$31.49

Options

Overview

The RAM-B-201-A-ALA1-KRU, SHORT length double socket arm with retention knob, has a socket at both ends that accommodates 1" ball bases. The knob extension allows for easy adjustment of the mount and prevents over loosening of the knob. This socket technology allows for almost infinite adjustment and perfect viewing angles.

product dimensions:

Overall Length: 2.42"

socket to socket length:

1.75"

ball size:

B Size (1")

weight capacity:

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

materials:

Marine-grade aluminum

packaging type:

Poly Bag

Weight:

0.3 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.

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Knowledge Base: Socket Arms

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RAM® Double Socket Arm with Retention Knob - B Size Short

$31.49

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
A	0.56" (14.3 mm)	0.5 lb	Action cameras and other ultra-light devices
B — this product	1" (25.4 mm)	2 lbs	Phones, GPS units, and small tablets — the most common size
C	1.5" (38.1 mm)	4 lbs	Large tablets, fish finders, and rougher rides
D	2.25" (57.2 mm)	6 lbs	Rugged tablets, laptops, and heavy equipment
E	3.38" (85.9 mm)	15 lbs	Large 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.

Short, medium, and long double socket arms compared side by side. This product uses a Short arm — Arm lengths

The double socket arm clamps over two balls — one on the base and one on your device holder. Arm length sets your reach: short arms are the most stable, while longer arms give you more freedom to position the device.

RAM Mounts overall and socket-to-socket arm lengths by ball size
Arm Length	Measurement	A Size	B Size — this product's ball size	C Size	D Size	E Size
Short	Overall Length	N/A	2.42" — this product	3.56"	5.69"	5.69"
Short	Socket-to-Socket Length	N/A	1.75"	2.5"	4.66"	4.66"
Medium	Overall Length	2.42"	3.73"	5.69"	8.44"	12.63"
Medium	Socket-to-Socket Length	1.75"	3"	4.66"	6.88"	9.88"
Long	Overall Length	3.56"	6"	9.13"	12.98"	N/A
Long	Socket-to-Socket Length	3.12"	5.31"	8"	11.41"	N/A