HUNDURE 42.5MM Engine Cylinder Piston Rebuild Kit For 025 MS250 023 MS230 MS 230 250 Chainsaw 1123 020 1209 For 023 025 MS230 MS250 chainsaw Cylinder diameter: 42.5mm Bolt Diameter: 10mm Colour: black Material: metal Package Contents: 1 x Cylinder 1 x Piston Assy 1 x crankshaft 1 x cylinder engine pan 1 x manifold 2 x grooved ball bearing 2 x Oil Seal 1 x spark plug 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.