1Model:HD110.CD110 2.CylinderDiameter:52.4MM Total Hight:37MM Hight Compression:19.5MM 3.Pin hole Diameter:13MM Pin Length:41.5MM 4.Ring Comp:1.0-2 Ring Oil:2.0-1 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