Skip to product information
1 of 9

RAM Mounts

RAM Double Ball Mount with Round & Diamond Bases - B Series - Medium Arm

RAM Double Ball Mount with Round & Diamond Bases - B Series - Medium Arm


Regular price $64.84 NZD
Regular price Sale price $64.84 NZD
Sale Sold out
Tax included. Shipping calculated at checkout.
View full details

RAM-B-138U RAM® Double Ball Drill-Down Mount with Diamond Plate


* Drill-down mounting solution; diamond plate features 2-hole AMPS hole pattern for attachment to compatible device holders
* Includes round ball base, diamond ball base, and B size medium length 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 marine environments
* Backed by a lifetime warranty

This consists of a 2.5" (63.5mm) diameter round base that contains the universal AMPs hole pattern, 94mm double socket arm and diamond base adapter.

The mount is designed with a 1" (B Series) diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allows for almost infinite adjustment and perfect viewing angles. The hole pattern found on the diamond base adapter will connect to most RAM cradles. The included RAM’s patented design dampens shock and vibration, helping to extend the life of your device.

The diamond base is a 1" diameter rubber ball connected to a 61.7mm x 33.3mm diamond base. The base has two holes 48.5mm from centre to centre, matches the industry standard AMPS hole pattern and will connect to a large variety of RAM Mount and third party cradles.

Specs & Features

Overall Length:
127.8mm (5.03")

Weight Capacity:
Standard Use:
907 grams (2 lbs)
Heavy-Duty Use:
454 grams (1 lb)

Hole Patterns:

Diamond Plate
2-Hole AMPs:
1.912” (48.5mm)

Round Plate:
4-Hole AMPS:
1.181" x 1.496" (30mm x 38mm)
3-Hole AMPS 120- Degree
1.812” (46.0mm)

Powder Coated Marine Grade Aluminium

Ball Size
1" Rubber "B" Ball Size

227 grams (0.5 lbs.)

RAM-B-201U - double socket arm
RAM-B-238U - Diamond Base
RAM-B-202U - round base