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RAM® Ball Adapter with Round Plate and 1/4"-20 Threaded Stud - B Size
Part #: RAM-B-202AU UPC: 793442120213

Product Information
Overview	The RAM-B-202AU, universal camera and camcorder base, consists of a 1" diameter rubber ball, connected to a 2.5" diameter round plate with 1/4"-20 camera thread. The round plate provides extra support and stability for cameras that rest on top of it. The male 1/4"-20 threaded steel stud will connect to any standard female thread found on camcorders and digital cameras.

Specifications
hole pattern	4-Hole AMPS: 1.181" x 1.496" 3-Hole 120-Degree: 1.812" Diameter
thread pitch	1/4"-20 x .25"
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
packaging type	Poly Bag
Weight	0.16 lb

RAM® Ball Adapter with Round Plate and 1/4"-20 Threaded Stud - B Size

RAM® Ball Adapter with Round Plate and 1/4"-20 Threaded Stud - B Size

Name: RAM® Ball Adapter with Round Plate and 1/4"-20 Threaded Stud - B Size
Brand: RAM Mounts
SKU: RAM-B-202AU
Price: 17.49 USD
Availability: InStock

Part#: RAM-B-202AU

UPC: 793442120213

$17.49

Options

RAM® Double Socket Arm - B Size Medium

$20.49

Overview

The RAM-B-202AU, universal camera and camcorder base, consists of a 1" diameter rubber ball, connected to a 2.5" diameter round plate with 1/4"-20 camera thread. The round plate provides extra support and stability for cameras that rest on top of it. The male 1/4"-20 threaded steel stud will connect to any standard female thread found on camcorders and digital cameras.

hole pattern:

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

thread pitch:

1/4"-20 x .25"

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

packaging type:

Poly Bag

Weight:

0.16 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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Documents

Knowledge Base: Ball Sizes

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RAM® Ball Adapter with Round Plate and 1/4"-20 Threaded Stud - B Size

$17.49

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.