CRANK SPINDLE - Material: Heat-treated 4130 Chromoly. - Splines: 8. - Diameter: 19mm. - Length: 5.7/8" (150mm). - Spindle bolts: 8x1mm (Included). - Compatibility: Fits Stolen OEM/MOB/SIC Mission Transit, Rant 8-S, Sunday Saker and most other 19mm 8 spline cranks.