This is a quality-made professional carpet tile cutter

Spring loaded return for quick action

consistent results every time

and striking off concrete

a special feed roller

U-Shape Grooving Blade 3.5MM (10 pack) diamond disk This is a quality-made professionalU Shape Grooving 3. 5MM Blades for Pull Groover. Includes a ten pack of 3. 5mm standard profile U Blades that fit the Pull Groover and other popular hand groovers. The blades are ground on the front and back sides to produce two grooving edges. They are made from high carbon steel, then hardened and ground to produce sharp, long lasting edges. A durable 10 pack clear plastic container snaps closed for storage.