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RAM® Light Duty C-Clamp Base with Dual Ball - B Size

Part#: RAP-B-121B2U
UPC: 793442036101
$36.49

Overview

The RAM® Light Duty C-Clamp Base with Dual Ball - B Size (RAP-B-121B2U) is a compact, versatile mounting base designed to add secure device mounting to desks, tables, workbenches, and other flat surfaces. The light-duty C-clamp attaches quickly to surfaces from 0" - 1.5" thick, while the integrated dual B size balls allow for the mounting of two devices. Whether you're mounting a phone, tablet, camera, scanner, or other accessory, the dual-ball design creates a highly adjustable foundation that leverages the RAM® ball and socket system for near-infinite positioning and optimal viewing angles. Ideal for offices, retail counters, healthcare workstations, and industrial environments, this clamp base delivers dependable performance in a compact footprint.

Features

  • Light-duty C-clamp attaches securely to desks, tables, and work surfaces without the need for drilling or permanent installation
  • Dual B-size RAM® balls provide mounting points on two axes, enabling flexible positioning and expanded configuration options
  • Compatible with a wide range of RAM® B-size socket arms and device holders for phones, tablets, cameras, scanners, and more
  • Compact, space-saving design makes it ideal for workstations, retail counters, healthcare environments, and mobile carts
  • Backed by a lifetime warranty

hardware included:

Assembly Hardware

clamp range:

0" - 1.5"

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:

Poly Bag

Weight:

0.34 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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RAM® Light Duty C-Clamp Base with Dual Ball - B Size
$36.49

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.

Add-on & Accessories

B Size Double Socket Arms
See All
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