This is the Crankshaft for the O.S. Max / .12TG-X Engine with Standard Crankshaft, OSMG1989. / / FEATURES: Constructed of steel / Standard (not pilot) shaft design / / INCLUDES: Crankshaft for the O.S. Max .12TG series / / REQUIRES: Installing in crankcase / / SPECS: Length: 1.4" (59.4mm) including crank pin / Diameter: 1.7" (44mm) at thickest point / / jxs 12/12/06 / ir/jxs