RAM 1" Double Ball Adapter w Round Base (RAM-B-217U)

Size Guide


  • 1 x RAM 1" Double Ball Adapter w Round Base (RAM-B-217U)

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 centre to centre 2.5" apart. 


  • 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 aluminium for durability and reliability in the most demanding environments
  • Backed by a lifetime warranty
  • Material: Powder Coated Marine Grade Aluminium
  • Ball Size: 1" B Size Rubber Ball
    4-Hole AMPS: 1.181" x 1.496"
    3-Hole 120-Degree: 1.812" Diameter

    Standard Use: 2 lbs
    Heavy-Duty Use: 1 lb
  • Lifetime Warranty

Note: The "U" in the part number reflects product packaged in poly bag.