RAM Pin-Lock Security Knob & Key for 1.5" Ball Double Socket Arm - RAP-S-KNOB5U

RAM Mount Pin-Lock Security Knob and Key for 1.5 inch C-Socket Arms RAP-S-KNOB5U

RAM Mount 5 Pin-Lock Security Knob and Key for 1.5 inch C-Socket RAP-S-KNOB5-5U

RAM-111BU RAM Mounts Universal Marine Electronics Plate w/ 1.5-Inch C-Sized Ball

RAP-S-KNOB5U RAM Mounts Pin-Lock™ Security Knob for C Size Socket Arms

RAM Mounts RAM-B-201U-C Long 5.91 Aluminum Dual Socket Arm for 1 Ball Size

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

RAP-S-KNOB3-5U RAM Pin-Lock™ Security Knob with 5-Pin Pattern for B Size Arms