Fangrui Product Details [upgraded Special Design]20pcs Rg59 Bnc Compression Connector With Fixed Pin, You Can Insure The Center Wire Goes Into The Connector More Accurate, Easier And Quickly,doesnt Get Bent, Better Than Other Raditional Bnc Connector. Connector Was Very Easy To Use To Rg-59 Coaxial Siamese Cable, Just Use The Coax Cable Core Insert The Compression Connector Pin And Compress It. [how To Use Crimper Tools]please Make Sure The Tool For The Correct Measurement For These Connectors,then Tighten The Connectors With Cable, Making The Connection Successfully Is Easier. 20pcs Bnc Compression Connector Works With Most Standard Compression Tools. [widely Application]rg59 Connector Suitable For Use In The Cctv Home Security Systems Camera Installation, Theater, Audio Video Cable, Made To Work In Any Weather Condition, For Indoor/outdoor Use. Compatible With All Cctv Analog, Ahd, Tvi And Sdi Home Security High-definition Camera Surveillance System. [weather Resistant] Heavy-duty Well Constructed Dc Barrel Jack Bnc Connecto