1Model:GY60 2.CylinderDiameter:44MM Total Hight:33.5MM Hight Compression:19MM 3.Pin hole Diameter:13MM Pin Length:33MM 4.Ring Comp:1.0-2 Ring Oil:2.5-1 5.Packing:1pc/pvc bag or depends on your requirements 6.Quantity: 100pcs/ctn motorcyle piston set /engine piston parts/china piston /motor spare parts/ motor accessory