RAM-B-138U-C RAM® Double Ball Mount with Round & Diamond Bases – B Size Long
The RAM-B-138U-C is a drill-down mounting solution pairing a round AMPS base and a diamond AMPS base on a long B Series double socket arm, giving extra reach with near-infinite adjustment and two mounting-hole options.
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 long B Size double socket arm for extended reach
Ball-and-socket technology allows near-infinite adjustability and dampens shock and vibration
Powder-coated, marine-grade aluminium construction
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 height: 185.7mm (7.31")
Arm length: 152mm (6") overall, 134mm (5.25") 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
Load rating: 907g (2 lbs) standard use, 454g (1 lb) heavy-duty use
What's Included
RAM-B-202U round base with 1" ball
RAM-B-238U diamond base with 1" ball
RAM-B-201U-C long 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.
