This is the Piston Pin for the 40FP, 40LA, and FS-40 Surpass OS Max engines. FEATURES: Polished Metal Construction INCLUDES: One Piston Pin Two End Pads REQUIRES: None, item is a stock part SPECS: Length: 18.4mm (.73") Diameter: 5mm (.20") COMMENTS: End Caps are only available with this set. NNA 12/27/01