Lawn Mower Blade Replaces AYP/ROPER/SEARS 165833, 406712,175064,189028 C. H. DIA: 5/8" CENTER TO CENTER (OUTSIDE HOLES): 1-7/8" DIAMETER OF OUTSIDE HOLES: 3/8 LENGTH: 21" THICKNESS: 0.1340" WIDTH: 2-1/4"