Free Agent 48 spline 3 piece cranks with spindle and bolts Color: BLACK Material: 4130 chromoly arms, 4140 chromoly spindle  Arm length: 175mm Spindle: 19mm diameter, 135mm long, 48 spline, for sealed bearing bottom bracket (BOTTOM BRACKET NOT INCLUDED) Includes: LH and RH arm, 19mm x 135mm  spindle, 2x spindle bolts with concave washers, assembly grease, torque bolt for chainwheel Uses 9/16" spindle pedals.