Dimensions: Dual Layer Lawn Mower Blade Sharpener measures 2.2"/5.6cm in diameter; 2.5"/6.4cm in length Sturdy material and easy installation: just attach it to the drill and sharpen the blade quickly and easily. Made of whetstone and steel, it is durable enough to restore your scissors to sharp, clean edges, and you can use these 4 pieces multiple times. What you will receive: Set of 4 sharpeners wind turbine sharpeners - blue + pink, two-pack wind turbine sharpeners - pink, two-pack wind turbine sharpeners - blue, two laminated lawn mower sharpeners - gray (fine sand). The grinding wheel is manufactured Made of high quality corundum, which is strong and durable, and will not melt the grinding wheel due to high temperature during grinding. Knife sharpeners work on most lawn mowers without removing the blade , mower blade sets are widely used for sharpening lawn blades, drill blades, bar cutters, tillers, axes, lawn mowers and shears.