Mulching Blade / AYP 173921Pack Size:1AYP 173921, Husqvarna 532 17 39-21NHC 212-0520, Oregon 95-068, Oregon 495-062, Rotary 10377, Sunbelt B1EP1040, Sunbelt B1PD1074AYP requires 3 for 48" deckLength: 16 5/8 ", Center Hole: 5 pt. star, Width: 2 1/2 ", Thickness: .203 "