RAM-KNOB3LU Key Lock Knob w/ Brass Insert for RAM B-Size 1" in. Socket Arms

RAM® Key Lock Knob with Brass Insert for B Size Socket Arms

RAM Mount Locking Security Knob Brass Thread for 1 inch Socket Arm RAM-KNOB3LU

RAM Mounts RAM-KNOB3LU Locking Security Knob Brass Thread for 1 inch Socket Arm

RAM-KNOB3LU Ram Mounts Locking Knob with 1/4"-20 Brass Hole for B Size Arms

RAM Mount 6 Pin-Lock Security Knob Set for 1 inch B-Socket Arms RAP-S-KNOB3-6U

RAM Mount 5 Pin-Lock Security Knob Key for 1 inch B-Socket Arms RAP-S-KNOB3-5U

RAM Mount Single Locking Knob Steel Thread for 1.5 inch Socket Arm RAM-KNOB5LSU