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

RAP-B-138U RAM® Composite Double Ball Mount with Round & Diamond Bases – B Size Medium

The RAP-B-138U is the lightweight high-strength composite version of the round-and-diamond double ball mount, pairing a round AMPS base and a diamond AMPS base on a medium B Series composite double socket arm.

Key Features

• Round base with the universal AMPS hole pattern for surface mounting; diamond base with the 2-hole AMPS pattern for lighter device holders
• Includes one round ball base, one diamond ball base, and a B Size medium-length composite double socket arm
• RAM® ball-and-socket technology allows near-infinite adjustability and dampens shock and vibration
• High-strength composite construction; lighter than the aluminium version
• Backed by RAM Mounts' lifetime warranty

Works With

The round base bolts down using the 4-hole or 3-hole AMPS pattern, while the diamond base connects to RAM® and many third-party cradles with the 2-hole AMPS pattern. The 1" B Size balls suit any RAM® holder built for a B Size ball.

Dimensions & Specifications

• Overall length: 127.8mm (5.03")
• Arm length: 94mm (3.69") overall, 76mm (3") socket-to-socket
• Diamond base: 61.7 x 33.3mm (2.43 x 1.31"), 2-hole AMPS 48.6mm (1.912") centre-to-centre
• Round base: 63.5mm (2.5") diameter; 4-hole AMPS 30 x 38mm, 3-hole AMPS 120° 46.0mm
• Ball size: 1" rubber ball, B Size
• Material: high-strength composite
• Weight: 227g (0.5 lbs)
• Load rating: 907g (2 lbs) standard use, 454g (1 lb) heavy-duty use

What's Included

• RAP-B-202U composite round base with 1" ball
• RAP-B-238U composite diamond base with 1" ball
• RAP-B-201U composite double socket arm for B Size 1" balls

FAQs

Q: What size screws do the base plates take?
A: The AMPS patterns most commonly take #8, #10, M4, or M5 screws. If you're pairing this with a RAM® holder, the holder comes with its own hardware; surface-mount hardware for your own application isn't included.