RAM Mounts Pin-Lock 4-Pin Security Knob for C Size and Swing Arms

The RAM Mounts RAM Pin-Lock Four-Pin Security Knob replaces all knobs on 1.5-inch diameter C size arms and mounts. It offers the ideal amount of leverage to properly tighten your mount to prevent slippage in heavy chop or in extreme vibration environments. With an emphasis on aesthetics and function, the knob features a low-profile design and only adds a small amount of additional bulk to your system when compared to the standard knob included.