3pk 50" Lawn Mower Blades for Ariens Gravely Zoom ZT50 03971900 03746500 model-580 Super L Series II The nylon-insert/Type E locking element

The nylon-insert/Type E locking element resists loosening caused by vibration and dynamic loads during mowing

also interchanges with Fits John Deere GY20569

Taper Diameter: 19

LUMENS: 155

187" oil ring

3pk 50" Lawn Mower Blades for Ariens Gravely Zoom ZT50 03971900 03746500 model-580 Super L Series II The nylon-insert/Type E locking elementThree (3) New Aftermarket Lawn Mower Blades Replaces Part Numbers: ARIENS: 03746500, 03971900 GRAVELY: 03746500, 03971900 Fits Models: ARIENS: Zoom, ZT 50, 911410 WAW 34 13. 5hp B&S Swivel, 911413 WAW 34, 911413 WAW 34 14. 5hp B&S Swivel, 915131 B&S 34", 915131 B&S 34", 915131 Zoom 1334 13hp B&S 34", 915141 B&S 42", 915143 Fits Kawasaki 50", 915151 B&S 34", 915151 B&S 34", 915155 B&S 42", 91515 GRAVELY: 915140 ZT 34, 915142 ZT 42, 915144 ZT 50, 915146