These diamond drill bits is made of high-tensile steel that is durable and is proven to really deliver in creating a perfect hole. You also get 10 different sizes of drill bit extensions to choose from!
What Materials Can I Use Diamond Drill Bits On?
Diamond drill bits are perfect for drilling holes through hard materials such as these:
Glass, sea glass, beach glass, fused glass
Stone, gemstones, rock, pebbles
Ceramic, porcelain, tiles, glazed pottery, plates
Shell, antler, bone, fossil
Very hard wood
When you using the diamond drill bits, please use lubrication (water),otherwise the diamond core drill will burn.Not for use on Concrete or for depths beyond about 1/2".
Being hollow, allows the water to flow up inside and around the inner core of these drill bits as you are drilling, helping to keep the drill bit cool and removing the debris.
Start your hole diagonally, make a round trace and then hold drill straight.