Medium-Lift Blade Length: 16 3/8 ", left hand blade, Center Hole: 3/4 ", Thickness: .187 ", Outer Hole: 3/8 ", Packaging Type: Branded label, Center To Center: 3 1/8 ", Width: 2 1/4 ". Replaces Part Numbers: Power King 60-4301. Stens Part Number: 315-259