High Value Pure Copper Crimp on BNC Male RG59 Coax Connector, 10-Piece 18Awg solid .037"; impedance:75ohm Tested. Quality guaranteed. Use best flame Retardant material. Temperature tolerance up to 250 Degree. Ship to worldwide Suitable for RG59 etc. cable. Pure brass with great connectivity.(Not alloy) 18Awg soild.037" impedance:75ohm