Mulching Blade / Cub Cadet 942-0739Pack Size:1Cub Cadet 942-0739, Cub Cadet 742-0739, Cub Cadet OCC-742-0739, MTD 942-0739, Partner PR1055016Home Depot 987125, Rotary 12893Cub Cadet CC189, CC500 and CC550ES, and CC550SP, 19" walk behind; Yardman 19" walk behind; 11A-18M9002 (2010 and 2011), 11A-18MZ202 (2010 and 2011), 12A-18M7002 (2010 and 2011) and 12AE-18JA002 (2010 and 2011)Length: 19 ", Outer Hole: 5/16 ", Center To Center: 2 1/2 ", Width: 2 1/4 ", Thickness: .134 ", Bow Tie center hole