【6 Different Sizes】 5mm, 6mm, 6mm, 8mm, 10mm, 12mm, these glass drill bits are perfect for various drilling tasks, with high drilling accuracy and smooth chip removal. 【High Quality Materials】 Made of high quality hard alloy YG6X, it has also undergone anti-rust treatment and reinforced heads, which can prevent the drill from cracking and is durable. 【Cross-Shaped Design】 The unique precision cross-angle ground spear tip reduces slipping and walking; quality tile cutter superior that cuts through ceramic tiles like butter, extremely clean and fast. 【Hex Shank for Quick Replacement】 1/4" hex handle is easier and safer to install in all power tools; compatible with Milwaukee and other general hand drills, bench drills with quick-change chuck lock. 【Wide Usage】 It can be installed on electric drills, bench drills, power drills, corded or cordless electric drills. It is suitable for drilling tiles, glass, porcelain, blocks, marble, brick, concrete, plastic, wood, walls, masonry and