Diamond Core Drill Bit Set-4/5 1" 1-3/8" 2" 3" 4" Diamond Hole Saw,for Porcelain Tile Ceramic Marble Granite Drilling with 5/8-11 Thread（20 25 35 50 75 100mm）

When you are building/remodeling a bathroom or kitchen like installing shower or install the faucet and handles in bathroom, you will need to drill holes through Porcelain tiles without cracking, so you could use our diamond tip drill bit to make those holes very precise For a better finish and longer duration of the porcelain tile drill bit,you could start on a slight angle at its lowest speed for better control, then with light pressure carefully work through the tile The average life of the tile hole saw depends on several factors,including the type of aggregate and material, its thickness/hardness ,proper cooling and use This is the best diamond drill bit for rock, DIY ,ceramic workers, construction workers, general contractors and tradesmen. More Heavy Duty and Wear Resistant than electroplated diamond bit,provide very high efficiency,cuts faster,durable and sturdy Multi-material application ideal for cutting openings for faucets, pipes, and hoses through tile, glass, stone, granite, and brick Quality Creates Better Life. All our products are subjected to strict quality tests. We want all the products can be recognized for their quality and durability.

• Size --Diamond drill bit 4/5" 1" 1-3/8" 2" 3" 4"（20 25 35 50 75 100mm）, diamond height 10mm, total length 60mm, 5/8-11 thread of the tile drill bit.
• Wide Application of drill bit --Worked great for porcelain tile, ceramics, bathroom tile,marble granite,stone,masonry, brick with ease,Using water could prolong the lifetime.
• Super Quality Raw Material --Using vacuum brazed technology ,which increases resistance to temperature and friction,to make the diamond particles better attach to the core steel,imporve the performance and lifetime.Constructed with high grade diamond grit for effortless cutting and improved durability in tough applications.High-quality core steel body helps to be more efficient and durable, not easy to deform
• Fast And Smooth Drilling --Special U-groove tooth shape and chip removal design of the tile hole cutter creates a high sharpness, you could drill smoothly with no broken edges
• Machine --angle grinder (direct connection) or electric drill (with adapter )