Electromagnetic clutch engagement lawn mower blades MTD compatible D. Shaft (mm): 25,4 Height (mm): 100 D. Pulley (mm): 135 V-belt length (mm): 15,9 Weight: 6,83 Kg For models: MTD RZT 17 , RZT 42 , Zero Turn , MF 50-22 ZT , RZT-50 Code: 25270536 Original code: 717-04622 717-04183 917-04622 917-04183