... and Competitive Price 3, Professional Service Kobelco Excavator Hydraulic Cylinder, Piston Rod, Cylinder Head, Shaft Nut, Cushion Collar, ... Cylinder barrel inner diameted (cylinder diameter)D3, Piston rod external diameter (rod diameter)d4, Locating distance L5, Travel ... 20Mn2Standard: GB8713-88 High Quality Kobelco Excavator Hydraulic Cylinder, Piston Rod, Cylinder Head, Shaft Nut, Cushion Collar, ...