Wolff Industries Coarse Wheel for Twice As Sharp Made in the USA it helps keep knives sharp

it helps keep knives sharp but it does it by steeling

It has superior abrasion resistance and thermal conductivity to ordinary abrasives like aluminum oxide or silicon carbide

The Wolff 600 Grit Diamond Wheel is for those times when you want a wheel that will remove more metal than the 800 Grit Diamond Wheel (used for for fine shears) but not as much as the 400 Grit Diamond Wheel (used for general purpose scissors)

It is especially useful when sharpening large knives or many knives in succession

Wolff Industries Coarse Wheel for Twice As Sharp Made in the USA it helps keep knives sharp46 Grit for Heavy Material Removal The Wolff 46 Grit Silicon Carbide Wheel is an optional wheel for the Twice As Sharp Scissors sharpener. It is ideal for fast material removal on heavy steel blades like lawn mower blades. This wheel has an arbor hole of 1" diameter. It comes with bushings for 7 8", 3 4", 5 8" and 1 2". It can be used on any of the Twice As Sharp sharpeners. Wolff Industries Part #27146