RAM® Double Ball Mount with Key Lock Knob - C Size Medium

The RAM-101U-L consists of a medium length C size double socket arm and two round plates with the 1.5" (38.1 mm) diameter C size ball. The round plates each have the industry standard 4 hole AMPS hole pattern, as well as a 3 hole 120 degree offset pattern. The tightening knob has been replaced with a keyed locking knob on the double socket arm. standard AMPS four hole pattern and a three hole 120 degree hole pattern.