Features 1) Spindle Assembly Replaces AYP 187292, 192870, 532 19 28-70, Ariens: 21546238, Husqvarna: 532 18 72-81, 532 18 72-92, 539 11 20-57 2) Pulley Replaces Ariens: 21546446, AYP: 195945, 197473 Husqvarna: 532195945 3) Spindle Height: 7 1/2"; Includes Mounting Bolts, Top nut, Bottom bolt, Bottom washer, and Grease zerk 4) Pulley Splined ID: 5/8"; OD: 6 1/4"; Height: 7/8" 5) We Ship Fast! We Include the important 187690 spacer that goes under the pulley. Without this spacer the pulley and shaft will fail in a short amount of time!