Material:zinc alloy+PTEE(heat endurance) Type:free welding Exterior: nickle plated Strip maximum of 12mm of outer sheath from cable,now strip 5-7mm of insulator to expose centre core,slide rubber outer shell out onto cable,undo brass screw in centre of plug and bend centre core around it - then tighten to hold core in place (not too long as it might arc to outer when all fitted) Straighten up clamp strip and slot insulator with braid touching metal.Once fitted use proper crimping tool to secure clamp to braided section.Bring rubber outer down to metal plug and push fit into place Can be used on CCTV, DVR, DVR Cards Quads, Mulitiplexers, Switchers and anything else that has a BNC Input/Output. Size:5x1.4cm/1.97x0.55inch Note: Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid. Package Includes: 1x BNC Male Connector