The Ken Onion Edition Knife and Tool Sharpener offers more power, more flexibility, and more control as specified by legendary knife maker Ken Onion. This sharpener bundled with the blade grinder attachment is designed for edge enthusiasts who want precision, incredibly keen edges, and consistent results. It sharpens every knife you own using a fully adjustable precision sharpening guide, variable speed motor and wide, flexible abrasive belts. From pocket & hunting knives, serrated knives, kitchen knives, and any other shape or type of blade you own. Professional blade makers like Ken Onion use flexible belts to put a razor-sharp edge on their blades, now you can have the same technology in your home or shop. The Blade Grinding Attachment is designed for knife shaping, sharpening and honing tasks. The Work Sharp Blade Grinding Attachment is constructed using cast metal components and engineered polymers built to endure the rigors of heavy shaping and sharpening tasks. The unit quickly connects to the Ken Onion Edition Knife & Tool Sharpener without tools, and belts are easily changed by hand. The blade grinder uses 1”x18” engineered abrasive belts in a wide range of grits, and a 4 pulley system that is fully adjustable from 10° to 35° in 1° increments. Belt speed is adjustable from 1200-2800 SFM (square feet per minute) to accommodate a wide range of sharpening and honing tasks. The center position of the top two pulleys is adjustable to set your preferred belt deflection – a full convex or a near flat convex – allowing you to customize your cutting edge to best meet your needs and preferences.