"Perfect Hole is a fast and practical way to cut holes in porcelain, glass, glass tile and block, marble, granite, ceramic tile and more. Uses diamond powder to do cutting. Simply apply slight downward pressure and maintain a vertical position for an even cut. Works on porcelain, glass, glass tile and block, marble, granite, ceramic tile Cuts holes without chipping or cracking Use of an industrial-grade hammer drill is recommended for best results Includes 1in., 1 3/8in., 1 3/4in., 2 1/2in. and 4 1.2in. hole cutters plus medium and fine abrasives Carrying case"
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