Square LE: heat treated CrMo JIS square-taper spindle with M8 (crank mount) thread bore and CNC machined alloy cups/spacer-shell: (325g). Sealed cartridge bearings with single-insert stop (chainline control). English (1.37"x24tpi LH/RH) threads fit 68mm; or 68mm E-type, and 73mm shell widths (no 73mm E-type).