This blade is a component of the mower assembly that works to trim the surface of the turf to the desired height. Mower Blade Part(s) Included in Kit B1PD5010: Blade (x1) Specifications Style: Mower Blade Thickness: 0.2″ Center Hole Diameter: 0.6″ Blade Type: Mulcher Width: 2.5″ Weight: 3.36 lbs Length: 21″ Mounting Multiple (61″), Multiple (61″), Multiple (61″), Multiple (61″), Multiple (61″), Multiple (61″)