Attachment only, requires the Work Sharp Ken Onion MK.2 Edition Sharpener for Use This 4 pulley attachment is adjustable to sharpen knives and tools from 10 Degree to 35 Degree and includes fiveer (5) 1" x 18" engineered abrasive belts in a wide range of grits This attachment is similar to what blade makers use. Provides a wide range of adjustability, you can custom shape, sharpen and hone your blades at home The belt speed is adjustable from 1200 SFM to 2800 SFM to accommodate a wide range of sharpening and honing tasks The Blade Grinder attachment provides a full selection of 1" x 18" abrasive grit belts and also accepts an optional high density cotton belt for power stropping Elevate your sharpening system to provide more precision and control on every knife you sharpen. Fully adjustable edge angles, three convex edge profile settings and all new ergonomic design allow you to take full control of your sharpening experience to create the edge you want on your knives. Designed in partnership with knife making legend Ken Onion. Sharpen pocket knives, scissors, shears, axes, garden tools and all your kitchen knives.