Check the listing for details. RAP-S-KNOB3-5U RAM Pin-Lock Security Knob with 5-Pin Pattern.... Color: Black, Condition: New. Listed at 20.44 USD. RAM Pin-Lock Security Knob with 5-Pin Pattern... RAP-S-KNOB3-5U Genuine RAM Products! The RAP-S-KNOB3-5U consists of a 1/4 INCHES -20 female threaded security knob and key knob. The RAP-S-KNOB3-5U replaces all knobs on 1 INCHES diameter B size arms and mounts. The RAP-S-KNOB3-5U 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-KNOB3-5U 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. RAP-S-KNOB3-5U is the perfect accessory for keeping your mounted electronic device safe from theft and tampering.hardware included (1) RAM Pin-Lock Security Keypackaging type Poly BagWeight 0.13 lb hardware included (1) RAM Pin-Lock Security Key packaging type Poly Bag Weight 0.13 lb