Tackle tough materials with this uxcell 40mm Diamond Core Drill Bit. Whether you're drilling into concrete, brick, block, masonry, stone, or even tile and glass, this bit is built to handle the hard stuff. Just remember—it's for wet use only. Using water while drilling keeps the bit cool, reduces dust, and seriously extends its life.

The specs are handy: it drills a 40mm (about 1.57-inch) hole with a depth of up to 58mm (2.28 inches). The shank is a non-slip triangle design that fits most standard electric hand drills and bench drills. It's made with a sintering diamond cutter head and a tough carbon steel body, so it's durable and cuts clean, fast holes without chattering.

The large clearance hole helps water flow in and debris flush out, making your job easier and cleaner. Recommended speed is between 3000 to 6000 RPM for best results. One bit comes per order. Perfect for DIYers, contractors, or anyone needing to make precise holes in hard surfaces. Just add water, and you're ready to drill!