This security pin-lock knob will attach to any "C" sized 1.5" socket arms, to create a lockable socket arm. It consists of a 5/16"-18 female threaded security knob and key knob, which replaces the knob on any 1.5" diameter C size socket arm.

This product offers the ideal amount of leverage to properly tighten your mount to prevent slippage in heavy chop or in extreme vibration environments, and is the perfect accessory for keeping your mounted electronic device safe from theft and tampering.

• Material: High Strength Composite

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