Upgrade your mower with this 6-pack of Rotary 9035 steel-inserted plastic blades, designed for durability and precision cutting. Measuring 4” in length with a 31/64” center hole diameter (ID: 0.4900”), they ensure a secure fit for Allen SE1601 and Grasscraft GC1601 models. These OEM-quality replacement blades provide reliable performance, keeping your equipment running smoothly.