The RAM-B-347U base consists of a B size 1" diameter rubber ball connected to a 2" x 1.7" square base. The base has four pre-drilled holes at each corner, using the universal AMPS hole pattern.

Features:

• 2" x 1.7" square ball base features industry-standard AMPS hole pattern with four pre-drilled holes at each corner
• Included B size 1" RAM® rubber ball allows 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 aluminum for durability and reliability in the most demanding environments

Specifications:

• HOLE PATTERN: 4-Hole AMPS: 1.181" x 1.496" (29.9mm x 37.9mm)
• THREAD PITCH: 1/4"-20
• PLATE SIZE: 2" X 1.7" (50.8mm x 43.1mm)
• BALL SIZE: B Size (1", 25.4mm)