Professional Drill Bits,16.1mm 16.2mm 16.3mm 16.4mm 16.5mm HSS Reduced Straight Crank Twist Drill Bit Shank Dia 12.7mm 1/2 Inch 16.1 16.2 16.3 16.4 16.5 (Size : 16.3mm)(Size:16.3mm)

High heat resistance for tough metal drilling Straight shank design is more suitable for many electric drills and drilling machines. Good performance, making clean and accurate holes for you. A set of glass drills that are very easy to work with.nce,feature drilling stably, fast speed, not breaking the border. Opening neat, smooth, no broken edges, no tremor phenomenon, chip easily This bit for the Hard Brittle Ceramic Materials such as ceramics,tiles,Marble,Concrete, glass, alu, metal sheet and oncutting hard metals, hard plastics and wood, but also for soft materials We pride ourselves in providing the best quality drill bits for over 30+ years. From drilling wood & tiles to masonry we're happy to be your professional choice!