RAM Double Ball Adapter with Round Base - B Size - Image 1
RAM Double Ball Adapter with Round Base - B Size - Image 2
RAM Double Ball Adapter with Round Base - B Size - Image 3
RAM Double Ball Adapter with Round Base - B Size
RAM Double Ball Adapter with Round Base - B Size - Image 2
RAM Double Ball Adapter with Round Base - B Size - Image 3

RAM Double Ball Adapter with Round Base – B Size

RAM Mounts

$89.00

Out of stock

Available on backorder

Mounting base: screws or bolts down (AMPS hole pattern). Has a B size (1") ball; add a B size arm and holder to complete the mount.

Ball sizeB sizeC size
RAM ball size guide

The letter in a RAM part number is the ball size. Every part in a mount must use the same ball size. C size parts carry no letter, so RAM-201U is a C size arm and RAM-B-201U is the B size version.

SizeBall diameterHolds up toBest for
A9/16" (14 mm)0.45 kgSmall cameras, action cams, remotes
B1" (25 mm)0.9 kgPhones, GPS units, small tablets. The most common size.
C1.5" (38 mm)1.8 kgTablets, small monitors, rugged devices
D2.25" (57 mm)2.7 kgLarge displays and laptops
E3.38" (86 mm)6.8 kgHeavy monitors and equipment

Arm length sets the reach. Short keeps the device close and rigid, Medium suits most installs, Long is for extra reach. If in doubt, choose Medium.

Need an arm and holder for this? Complete your mount ↓

Not sure this fits your setup?Tell us your device and where you are mounting it. The RAM® Mount Builder shows every mount that fits.Find my mount

Complete your mount

A RAM mount is three parts: a base that attaches to your vehicle or surface, a socket arm that connects the balls, and a holder for your device. All B size parts below fit together. Tick one of each, then add them in one go.

Base

Arm

Holder

SKU RAM-B-217U Categories , , , ,
Overview

Overview

The RAM-B-217U consists of two 1" diameter rubber balls connected to a post and 2.5" diameter round base. The round base has pre-drilled holes, including the universal AMPs hole pattern and 3-hole 120 degree pattern. The 1" balls measure center to center 2.5" apart.

Features

  • 2.5" round plate connects to RAM® device holders containing the universal AMPS hole pattern
  • Two B size 1" RAM® rubber balls allow for connection to any B 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

Specs

Hole Pattern

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

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

0.25 lb

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