This product is designed to be used with the RAM mounts swing arms and will allow them to be locked securely.

It consists of a 3/8"-16 female threaded security knob and key knob, which can replace all knobs on RAM single and double swing arms. It  offers the ideal amount of leverage to properly tighten your mount to prevent slippage in heavy chop or in extreme vibration environments. 

• Material: High Strength Composite

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