28″ x 10 mm Notched Disc Blades 2 1/8 inch Rd with 4 DimplesNotched Disc Blades 28" x 3 8 inch (10 mm) with 4 Dimples Use this 4 Dimples Disc Harrow Blade 28 inch x 3 8 inch (10 mm) product for your garden, farm, or field. These 28 Inch x 10 mm Notched Disk Blade with 4 Dimples assist you in tilling the soil or chopping up remainder crops and work best in harder soil that may contain rocks and sticks and provide you a very aggressive cutting edge that is well suited for soil penetration. Specification