This is a quality non genuine collar screw and fits the following models, 017, 018, 021, 023, 025, MS170, MS171, MS180, MS181, MS210, MS230 & MS250. The collar screw measures 38mm in length, please check the size of your old screw before ordering.
Similar to Stihl Part No: 1123 664 2400
MS Part No: 75144
