RAM® Diamond Ball Base - A Size

Part#: RAM-A-238U
UPC: 793442402388
$13.99

Overview

The RAM-A-238U consists of a 0.56" diameter rubber ball connected at right angles to a 2.43" x 1.31" diamond base. The base has two holes 1.912" from center to center, matches the industry standard AMPS hole pattern and will connect to a large variety of RAM Mount and third party cradles.

Features

  • Diamond plate features industry-standard AMPS hole pattern and measures 2.43" x 1.31"
  • Included A size 9/16" RAM® rubber ball allows for connection to any A size RAM® double socket arm; ball and socket technology allows for near-infinite adjustability
  • Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments
  • Backed by a lifetime warranty

hole pattern:

2-Hole AMPS 1.912"

ball size:

A Size (9/16")

weight capacity:

.5 lb

materials:

Marine-grade aluminum

packaging type:

Poly Bag

Weight:

0.07 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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QUESTIONS & ANSWERS

Have a Question?

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  • is hardware included?

    Unfortunately, due to the number of variables surrounding our drill-down mounting locations, we are unable to provide hardware with many of our drill-down solutions. Since we do not/cannot know what type of material the mount is being attached to or how it is being attached, our development team decided it was best to let customers choose the best hardware for their mounting applications. 

    If you need any assistance determining what hardware is best for you, we recommend visiting your local hardware store or chatting with the manufacturer of the vehicle you are mounting to. From there, you can determine the best way to install your mount to fit your needs. 

RAM® Diamond Ball Base - A Size
$13.99

Size Guide

Ball sizes
  • A Size — this product 0.56" ball
  • B Size 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
A — this product0.56" (14.3 mm)0.5 lbAction cameras and other ultra-light devices
B1" (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

Socket Arms
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