Material: 1-1/2" OD 17/4 stainless steel solid round bar. Due to handling of the material prior to its arrival at our facility, this item may have cosmetic imperfections; in most cases this can be minimized by clever positioning of the bottom bracket shell.
OD: 1.500"
Width: 73.5 mm, supplied 0.5 mm oversize to allow for clean up after welding
Relief: On the inside diameter to 1.385"/1.395"
Threads:
1.370"-24, right and left hand; compatible with all modern threaded bottom brackets
Thread length = 0.50"
Left hand thread is identified by a radial groove on the face of the shell