RAM® Double Ball Mount with Backing Plate & Diamond Plate
Ball Base Information
"RAM" Prefix Code
To provide lightweight strength and corrosion resistance, RAM is made of marine grade Aluminium with a black powder coated finish, stainless steel hardware and 'rubber balls' - 'RAM' products are stiffer and stronger than their 'RAP' variants and typically used in more rugged applications.
"RAP" Prefix Code
Many of our 'RAM' products are available in a 'RAP' - composite variant. Our composite 'RAP' products are generally designed for lighter duty applications where keeping the weight of the mount low is a priority.
RAM® BALL SIZES
The weight limits below are a guide only. All factors in a planned mounting configuration should be considered to choose the most suitable ball size.
The most common ball size applications:
B Size - Action Cameras, Phones and Small Tablets
C Size - Medium - Large Tablets in Heavier Duty Applications
D Size - Heavy and Rugged Tablets and Laptops in Commercial Applications
Please check with our technical team for advice.


Backorder parts are normally available within a 1 to 7 week timeframe. Please contact our sales team for more accurate delivery information.
You can also order the individual component parts below.
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Features
- 2.43" x 1.31" diamond base with B size 1" RAM® rubber ball connects to RAM® device holders containing the universal AMPS hole pattern; includes B size medium length double socket arm
- 2.10" x 2.60" steel backing plate provide support for mount when drilling in and securing to thin surfaces, like dashboards
- 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
The RAM® Double Ball Mount with Backing Plate & Diamond Plate (RAM-B-138U-225B2) consists of a double socket arm, one 2.5" diameter round base, one 2.43" x 1.31" diamond base, one 2.10" x 2.60" backing plate, and mounting hardware. Each base features the universal AMPS hole pattern, making them compatible with all RAM® device holders. The mount is designed with a 1" diameter rubber ball and socket system that features adjustment points at both ends of the double socket arm, allowing for near-infinite adjustability for ideal viewing angles.
Components
hardware included
(1) 2.10" x 2.60" Steel Backing Plate
(4) #8-32 x 1" Screws
(4) #8 Split Lock Washers
(4) #8 Flat Washers
product dimensions
Overall Height: 5"
socket to socket length
3"
hole pattern
2-Hole AMPS: 1.912"
ball size
B Size (1")
weight capacity
Standard Use: 2 lbs
Heavy-Duty Use: 1 lb
materials
Marine-grade aluminum
Stainless steel
packaging type
Poly Bag
Weight
0.343 kg