Adjustable cutting box to apply a groove on the back of the tile - Device to cut the slot in th eback of the tile/slab. The Raimond Rai-Cut Grooving Tool is intended for use with the Rai-Fix Mechanical Fixing System for wall installation of tiles and stone slabs. The grooving tool has a universal attachment and is supplied with an angle grinder. The Rai-Cut cuts the required groove to the correct depth and angle in the back of the tile or stone and is adjustable to accommodate the 1/4" and 3/8" plates.