copper flanged breaker bolt 1.high accuracy,longer service life 2.OEM offered 3.low price always 4.quick delivery copper cylindrical flanged breaker bolt product namematerialdimension(inches)standardbreaker bolt copperd43.9*32M13DIN We specialized in processingall kinds of mechanical parts, sophisticated equipment, strong technical force.If need, contacttel(86-510)86521310mob (86)15358067553