Syntec 4-1/2" Coating Removal Abrasive Wheels, 5 Pack - 36 Grit with 5/8"-7/8" ArborSyntec's 4 1 2" Coating Removal Abrasive Wheels, otherwise known as Tec Wheels, offer a shorter life span than traditional cup wheels. Although the lifespan of these Coating Removal Abrasive wheels are shorter, they still do a great job at removing paint and other coatings from surfaces. Tec wheels are made from silicon carbide allowing for a coating removal with less vibration and a smoother surface. May be used in wet and dry applications.