DOP57017 MTD Snowblower Paddle Set contains 6 pieces. Fits 21" Snow Wolf. Rectangles Size ; 1-1/2" x 3-3/8". 2 mtg. holes on 2" centers. Crescents ; 1-1/2" x 11-1/4". Used with our DOP73-017 scraper bar. Replaces MTD part numbers 731-0782, 7310782, 7310781, 731-0780, 7310780, 721-0287, 7210287, 753-0613, 7530613, 706-15688, and 70615688. Las 57017