ITEM NAME:Glass Drill Metal Ceramic Tile Drill Bits, 4/25'' to 2/5'' Y4C4 Glass Drill Metal Ceramic Tile Drill Bits, 4/25'' to 2/5'' Y4C4 Provides smooth, accurate drilling in ceramic tile, mirrors, glass, marble & china Cuts perfectly round holes without chipping or breaking the material Spear pointed tip reduces breakage Contents: 4 pcs Trapani metal to cut ceramic glass Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.