For MS180 MS170 018 Gasoline Chainsaw Piston Diameter: 38mm Wrist Pin Diameter: 10mm Include: 1 x Cylinder, 1 x Piston, 1 x Pin, 2 x Ring, 2 x Clip, 1 x Needle Bearing, 1 x Crankshaft, 2 x Bearing, 2 x Oil Seal, 1 x Pan, 4 x Mount Screw, 1 x Spark Plug, 1 x Intake Manifold, 1 x Muffler Gasket, 1 x Carburetor Gasket, 1 x Spark Plug colour: black Material: metal + plastic Package Contents: 1 set x chainsaw accessories Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.