50-30 Reduction Bar Stock Set

Compatible with the BM50 Portable Boring Machine, this bar stock set is designed for machining holes ranging from 32 mm to 70 mm. The bar stock is manufactured from a piston rod with a hardness of 62 HRC. After being made from 8620 steel, the bearing bushings undergo vacuum heat treatment and precision grinding, resulting in a hardness of 62 HRC.