Kraft Tool Co.® ST048 #400 0.5" Replacement Carbide Scoring Wheel for Tile Cutters. This blade fits on any of the Superior Tile Cutters (Kraft Tool #ST002, ST004, ST006, ST007) to extend the life of the tool. The carbide blade provides hardness, strength, and longevity. Move the blade around for even wear and an even longer life. Blade can also be sharpened to increase its life. Each wheel is fitted with bushing, washer, screw and locknut.