CableCreation Coaxial Plugs Crimping Tool, for BNC, TNC, UHF, ST, SC and SMA RG-6 Connectors Plug universal 9" Hex Crimp Ratcheting Tool for R59/6 coax cable, and N, BNC, TNC, UHF, N, Twinax contacts, RG58, RG59, RG62,etc Diameter: Inner wire 0.3  0.7mm / outer 5  5.15mm Ratchet releases when you have the connector adequately crimped