1Model:DIO50 2.CylinderDiameter:39MM Total Hight:53MM Hight Compression:30MM 3.Pin hole Diameter:12MM Pin Length:33MM 4.Ring Comp:1.2-1K 1.5-1K 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