Drill Bit For Metal Drill -Multifunctional Working Hole Ultimate Glass (7pcs) Sets Ceramic Bits LED light

4.-slip shrank 10mm cutting diameter: 70mm / 2.8in 12mm cutting diameter: 75mm / 3.0in Universal 3.Easy chip removal Triangular shank allows drill bits to be held tightly and slip. 7pcx Drill Bits for everyday drilling on multiple materials including steel alloy tile concrete brick glass wood and more. TIME & EFFORT for your metal/wood drilling project! 6mm cutting diameter: 55mm / 2.2in 3mm cutting diameter: 40mm / 1.6in 5mm cutting diameter: 42mm / 1.7in Strong carbide tip with spear pointed design can easily drill through various materials like tile concrete brick glass wood etc. 1. material 4mm cutting diameter: 42mm / 1.7in Package including： 5. Different sizes W-type slot design provides low resistance resulting in faster & smoother drilling and easier chip removal. 2.Wide usage Drill Bit is made of industrial-grade 6542 Carbide and durable alloy to perform excellent high-speed drilling. With W-type slot design it allows easier chip removal and reduces resistance resulting in smoother drilling. 8mm cutting diameter: 66mm / 2.6in Can be installed in any standard electric drills. 6542 Carbide and durable alloy with reinforced head bit and provide longer life.