Abstract: A device for roughening the worn or smooth grip of a golf club or other handled item includes a flat plate member with an aperture therethrough. A plurality of sharp-tipped serrations extend around the periphery of the aperture, with the tips defining a circular line that has a diameter greater than the maximum diameter of a grip at the free end thereof. Adjacent serrations define a valley therebetween. In use, the plate member is clamped in a bench vise and the grip, still affixed to its golf club, is moved through the serrated aperture with a radially directed force being applied thereto so that the serrations will cut a series of grooves into the material of the grip. Preferably the grip will be rotated and moved reciprocally through the serrated aperture so that a random pattern of grooves is cut into the grip, thereby restoring the grip to a condition that approximates its original textured surface.