Description: High quality replacement parts for Chainsaw Fits for STIHL MS250 MS230 MS210 MS180 025 023 021 018 Chainsaw Chain Sprocket Size (HxDia): Approx. 3x6.5cm/ 1.18x2.55 inch Clutch Size: (HxDia): Approx. 0.8x6cm/ 0.31x2.36 inch Material: Steel Specification: REPLACE OEM#: 1123 640 2074, 1123 160 2050, 0000 958 1022, 9460 624 0801, 9512 933 2260, 1123 640 7102, 1123 647 2400, 1123 664 0500, 0000 955 0801 Color: As shown Package Includes: 1 Piece of Chain Sprocket .325"-7 1 Piece of Clutch 1 Piece of Washer Ø 27 mm 1 Piece of E-clip 8x1.0 1 Piece of Clutch Needle Bearing 1 Piece of Worm and Spring 1 Piece of Bumper Spike 2 Pieces of S Hexagon nuts M8 (As shown in the Pictures.)