Key features

• •Tough 4.5" Dry Diamond Hole Saw – drilling perfect 4.5" (115mm) Diameter holes in ceramic porcelain marble granite natural stone tiles on wall or floor, as well as countertops for installing faucets, showerheads, or drains, mounting ventilation and exhaust ducts, electrical outlets and switches and more
• •High Quality Diamond Drill bits for Ceramic – High technology Diamond tipped drill bit providing fast and smooth cutting ability in hard masonry materials and assuring longer lifetime; Slot in the side for easy removal of debris; Max cutting depth 2"
• •Fit most tools – 4-1/2 inch Tile Hole Saw Bit is built with a female 5/8-11 thread to attach directly to an angle grinder, wet polisher and other power tools; If it's getting too hot, dip in water or stop to cool it down
• •Easy to Use – you can let the diamond hole cutter do the cutting job, no extra pressure is required; just move the tool in a swiveling motion to remove the debris and prevent diamond wear out
• •User Tips – Start the tool at a high speed between 10,000 and 14,000 rpm, let the bit touch the tile in a 45-degree angle to get position slot, then bring the tool up-right slowly and move in circle motion; Please do not touch the bit soon after drilling.