DOP91-706SI Simplicity 50" Mower Blade No. 1708229. It takes 3 blades for a 50 inch mower. Size is 18 1/8 " long: 3/4 center hole, side holes are 3/8" center to center is 2 9/16. Width and thickness is 2.00" and .203". This fits models 1695141, 1695418, 1695588, 150Z series models: CSC2650, SC2450, SC2650, ZT2450, LT200 series models LT18500 and LT2250, RZT model RZT22500BVE2 (7800011 &7800153) YT1850, YT2050, YT2350, YT23500 (2690752), YT2250 (1694627), YT22500 (2690269) andYT400. Replaces part numbers 1708229, 1708229A, 1708229ASM, 1708229BMA, 1726453, 1726453A, 1726453BMA, 1726453BZ, 172643BZP and 1726453BZYP.
{Blades are sold individually}