
[1]: The Clutch Drum Bearing Kit fits Stihl MS271 MS291 MS261 MS261C MS271C MS291C MS240 MS260 MS270 MS280 Chainsaw. [2]: Replace OEM number 1141 640 2001,1121 160 2051,9512 933 2260 [3]: The Sprocket Rim: 0.325" pitch, 7 teeth. [4]: Package Contents: 1 x Clutch Drum, 1 x Clutch Assembly, 1 x Needle Bearing, 1 x Washer, 1 x E-clip, as shown in the picture. [5]: The replacement parts are of high quality and long service life, please carefully compare your original model with our pictures and product details to avoid the model problem. For more questions, please feel free to contact us.