HAT TX brass bolt raw material: stainless steel finish: CP, SSS,NS,AB, size: 6"x3"/4, 8"x3"/4,10"x3"/ ... 4,12"x3"/4 "x3"/4HAT MC003 zinc alloy bolt raw material: stainless steel ... finish: CP, SSS,NS,AB,size: 6"x3"/4, 8"x3"/4, 10 ... integrity trade, OEM & ODM also welcome. HAT TX brass bolt, 6"x3"/4, 8"x3"/4,10"x3"/4,12"x3"/4