The RAM-B-349U includes a M10 x 1.25 pitch male thread connected to a 1" rubber ball. The threaded hole must contain the following dimensions for this base to fit: M10 1.25 pitch with a 14.5mm flange diameter with a 10.15mm thread length.

FEATURES
Universal threaded hole solution for a variety of use cases
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 aluminium for durability and reliability in the most demanding marine environments
Backed by a lifetime warranty
THREAD PITCH
M10-1.25 x 7/1152.4mm

BALL/SOCKET SIZE
B Size Ball :2.54 cm (1") in diameter (generally used to support a load of 0-2 kg)

MATERIALS
Marine-grade aluminium