sku # BBS-US-69
Made from 4130 steel, these US made, lightweight 38.1mm (outer diameter) ISO BB shells are available in 69mm with an extra 1mm of width ensuring sufficient material for facing both sides. The drive side with the left hand thread is identified by a radial groove on the face of the shell.
Right and left hand threaded (ISO) 1.370" x 24tpi.
99g - Weight is based on representative sample. Actual weight may vary slightly.