? Latest generation NorZon (zirconia alumina) which outperforms competitive zirconia by 20% ? NorZon (zirconia alumina) out performs aluminum oxide up to 10X over aluminum oxide on difficult to cut metals ? High performance resin bond designed for free cut and long life ? Broad utility from light-to heavy-pressure applications, on a wide range of materials; Excellent performance-to-price ratio for lower total grinding costs ? Made in the USA ? A chop saw is a light, low horsepower portable machine. These machines can be easily moved, but the workpiece is carried to the machine. Chop saw cut-off wheels are designed specifically for this machine with finer grit, softer grades, and reinforcement layers that match the application.