ITEM NAME:Muffler Exhaust Bolt Gasket fit for Stihl 021 023 025 MS210 MS230 MS250 Chainsaw Muffler with Bolts Gasket Kit fit for Stihl 021 023 025 MS210 MS230 MS250 Chainsaw SPECIFICATIONS.(Compatible With: fit for Stihl 021 023 025 MS210 MS230 MS250 Chainsaw. Item included: 1 x Muffler(with 2pcs Bolt and 1pcs Gasket). Bolt Size: approx. 2) Perfect match for the original one. Manufacturer Part Number: 1123 140 0606.