17Pcs Diamond Drill Bit Set, Including 15Pcs Bits 6-50mm, Silver\nProduct Details\n--Publisher: Hozzwhoo\n--Publication date: 0\n--Item weight: 860 g\n--Dimensions: 5 x 5 x 0.1 cm\n--\u3010Premium Quality\u3011Made of high-strength carbon steel with a smooth nickel-plated surface, the glass drill bit has a low minimum resistance and makes it easy to drill precision holes.\n--\u301015 Different Size Diamond Drill Bit Set\u30116mm (1/4 \""), 8mm (5/16\""), 10mm (3/8 \""), 12mm (1/2\""), 14mm (9/16 \""), 16mm (5) / 8 \""), 18mm (11/16\""), 20mm (3/4 \""), 22mm (7/8\""), 25mm (1 \""), 26mm (1-1 / 32\""), 28mm (1-3) / 32 \""), 30mm (1-1 / 8\""), 40mm (1-1 / 2 \""), 50mm (2\""). Meet your different needs.\n--\u3010Adjustable Drill Guide\u3011No need to worry about scratching your tile when drilling the hole. Our Adjustable hole saw drilling guide with suction cup and 4 bearings.From 6mm to 50mm all the hole saws can fit in this guide.\n--\u3010Great Helper for you\u3011It can be attached to electric drilr