MTD Genuine Parts Shear Pins - 2007 and After Fits 900 Series two-stage snow thrower models, 2007 and after For Troy-Bilt, MTD, Yard-Man, Yard Machines, Huskee and Bolens units Use to help protect snow throwers from damage when the impeller comes in contact with a solid object Includes four pins and four clips. 1/4" x 1-3/4" pin size. Replaces O.E. # 738-04155