HIPA Bumper Spike + Sprocket Cover + Studs / Nuts + Chain Tensioner + Sprocket Bearing Cage for STIHL 021 023 025 MS210 MS230 MS250 Chainsaw Package include: 1 sprocket cover, 1 bumper spike, 2 sprocket cover studs & nuts, 1 chain tensioner, 1 sprocket bearing cage Fitment models: STIHL 021 023 025 MS210 MS230 MS250 Chainsaw You will receive what you see in the picture