Patented

RAM® Twist-Lock™ Dual Suction Cup Base with Socket Arm & Retention Knob

Part#: RAM-B-189B-201-ALA1-KRU
UPC: 793442124662

Compatibility

Kit Components

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$124.49

Overview

The RAM-B-189B-201-ALA1-KRU consists of a double 3.3" twist lock suction cup base that is connected to the diamond base with 1" rubber ball. The suction cup is designed to have an extra strong hold on any smooth non-porous surface, but for best result, mount the suction cup on a glass or non-porous plastic surface. The ball on this base connects to the standard length double socket arm with retention knob. A single spring inside the arm opens the end sockets, allowing you to pivot the ball and socket connection. 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.

hardware included:

Assembly Hardware

suction size:

(2) 3.3" Diameter Bases, Total Width 7.95"

socket to socket length:

3"

ball size:

B Size (1")

weight capacity:

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

materials:

Powder coated steel
Marine-grade aluminum
High strength composite

packaging type:

Poly Bag

Weight:

1.23 lb

Additional Information:

*The rubber material used in suction cups is considered a general wear item and is not covered under the lifetime warranty. Learn more about the RAM® warranty policy here.

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

RAM® Twist-Lock™ Suction Cup Assembly Guide

QUESTIONS & ANSWERS

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RAM® Twist-Lock™ Dual Suction Cup Base with Socket Arm & Retention Knob
$124.49

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.