3-12mm Drill Bits Cross Hex Tile Bits Glass Ceramic Concrete Hole Opener Alloy Triangle Drill Glass Bits Woodworking Product description: Features: Carbide steel is the first choice, which is harder and more wear-resistant than ordinary drills The surface of the drill body is centerlessly ground, which makes chip removal smoother. The shank of the drill bit is cut into a solid hexagon, which makes the electric drill grip more firmly and makes the drilling less easy to slip. Compatible equipment: lithium electric drill/hand drill/bench drill Uses: glass, ceramics, vitrified tiles, all-ceramic tiles, brick walls, wood, plastics Model62A35F539H81773 Specification: Name: Multifunctional triangle drill Material: Carbide Colour: Black5PCs-A: 3mm / 4mm/ 5mm / 6mm / 7mm 5PCs-B : 5mm / 6mm/ 8mm / 10mm / 12mm 5Pcs-C10mm x 5Pcs 5Pcs-D12mm x 5Pcs 10Pcs-A3mm x 10Pcs 10Pcs-B4mm x 10Pcs 10Pcs-C5mm x 10Pcs 10Pcs-D6mm x 10Pcs 10Pcs-E8mm x 10Pcs notes 1. Manual measurement, please allow 1~2mm error, thank you.