Technical Details Agrees with the ANSI C119.1 and ANSI C119.4 norms EPDM rubber or dielectric Neoprene 60A. 99.9% copper body to provide conductivity and rigidity in conformity with the ASTM B152 norm Tinning agrees with the ASTM B545 norm, classes CU/SN5 and 'A’ Comes with stainless steel captive-washer bolts