ITEM NAME:38mm Piston Kit Rings Pin Bearing Circlips Set fit for Stihl 018 MS180 Chainsaw 38mm Piston Rings Pin Bearing Circlips Set fit for Stihl 018 MS180 Chainsaw SPECIFICATIONS.Compatible With: fit for Stihl 018 MS180 Chainsaws. 1 x Piston Pin Bearing. 1 x Piston. Color: As Picture Show.