The RAP-S-KNOB6 consists of a 3/8"-16 female threaded security knob and key knob. The RAP-S-KNOB6 replaces all knobs on RAM single and double swing arms. The RAP-S-KNOB6 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 RAP-S-KNOB6 is low in profile and only adds a small amount of additional bulk to your system when compared to the standard knob included. At a fraction of the cost of currently available keyed locking knobs, the additional peace of mind and tamper resistance comes at a very affordable price. The RAP-S-KNOB6 is the perfect accessory for keeping your mounted electronic device safe from theft and tampering.