Product Name:SHDIATOOL 4 Inch Granite Core Drill Bits Laser Welded Diamond Hole Saws 102mmSize: 4-Inch(Outside Diameter 102mm)Total length: 100MM; the max workable depth: 75mmConnection: 5/8-Inch-11 ThreadRecommended Machine: Angle grinderCutting Method: Dry/WetApplication: Drilling Hard Granite/ Marble/ Concrete/ Brick/ Stones Why SHDIATOOL: SHDIATOOL is a professional manufacturer and supplier of diamond tools.We are focus on providing high-quality and practical products for professionals.Our tools cover diamond saw blade,grinding wheel,diamond bits,polishing pads..., mainly for processing granite marble concrete ceramic porcelain block stone iron steel and so on. Application and Notice Which Material or Condition? Drilling hard granite, marble, engineering stone, concrete, brick,masonry and all similar materialsIdeal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers and vanitiesDry or Wet Drilling - use wet will greatly prolong the segment life Which Machine? With 5/8-Inch-11 Thread; Easily operate on Angle GrinderIf you fit them on drill or other machine, you need an adapter, such as SDS, hex, Round plus shank... Notice: Do not use this bit in hammer or Impact modeDo not give too much pressure or sway the core bits when workingIf find hard to drill, take a break and check the segments. If the segment become blunt, please try to sharp it by drilling a hole on the abrasive concrete and then continue to drill the hard material. Operation Tips for Laser Welded Diamond Dry core bits 1.Fix it on angle grinder tightly and rightly 2.Turn on the angle grinder and let the bit rotating in the air to check if there is balance problem 3.Hold the machine very steadily and give gentle pressure 4. Start drilling as per following instructions: 1) place the drill at a 30 degree angle, it will help to position 2) Drilling the material till the hole start to form 3) Bring the drill up into upright position slowly then keep drilling vertically. Laser welded technology Laser welded technology avoid segments off when dry working(Every Diamond Segment is made by us Independently) Vacuum brazed side protection Vacuum brazed side protection offers clean cut & steel core protection (inside and outside both, 20MM & above ) Turbo segments Turbo segments could provide aggressive drilling speed (32mm & above) and smooth Cutting in Dry/Wet Condition Strong Body and High-Quality Diamond High-Quality Diamond and Stong Steel Body extend drilling life and improve the working efficiency How to Use Laser Welded Core Drill Bits(Graphic) Step 1 Fix it on angle grinder tightly and rightly.Turn on the angle grinder and let the core bits rotating in the air to check if there is balance problem Step 2 Hold the machine very steadily and give gentle pressureStart drilling as per following instructions1) place the drill at a 30 degree angle, it will help to position2) Drilling the material till the hole start to form Step 3 3) Bring the drill up into upright position slowly then keep drilling vertically.Do not give too much pressure or sway the core bits when working Diamond Hole saw Set(A688S17) Diamond Milling Bits Diamond Hole saw Set(A854S14) Diamond Hole Saw Kit(A85458K1) Diamond Hole Saw Kit(A85458K3) Diamond Hole Saw Add to Cart Add to Cart Add to Cart Add to Cart Buying Options Add to Cart Customer Reviews 3.7 out of 5 stars 17 4.6 out of 5 stars 85 4.6 out of 5 stars 407 4.3 out of 5 stars 196 4.3 out of 5 stars 196 4.6 out of 5 stars 52 Price $189.99$189.99 $33.99$33.99 $69.99$69.99 $89.99$89.99 $127.49$127.49 $44.99$44.99 Size 20/25/35/45/65mm 35mm(1-3/8") 6/8/10/25/35/51 6/8/10/13/19/25/32/51mm+10mm 25/35/45/51/65/76mm+25mm 50mm(2") Tech. Laser Welded Tech. Vacuum Brazed Tech. Vacuum Brazed Tech. Vacuum Brazed Tech. Vacuum Brazed Tech. Vacuum Brazed Tech. Connection 5/8"-11 5/8"-11 5/8"-11 5/8"-11 & SDS Shank 5/8"-11 5/8"-11 Condition Dry/Wet Drilling Dry/Wet Milling Dry/Wet Drilling Dry/Wet Drilling Dry/Wet Drilling Dry/Wet Drilling 1/4" Diamond Hole saw(2pcs) 1-3/8" Diamond Hole saw 1/4" Diamond Drill Bits(Dry) Diamond Drill Bits Set Diamond Drill Bits Set Diamond Drill Bits Set Add to Cart Add to Cart Buying Options Add to Cart Add to Cart Add to Cart Customer Reviews 4.6 out of 5 stars 1,676 4.6 out of 5 stars 1,676 4.3 out of 5 stars 172 4.3 out of 5 stars 172 4.3 out of 5 stars 172 4.3 out of 5 stars 172 Price $17.99$17.99 $21.99$21.99 $16.14$16.14 $23.99$23.99 $10.39$10.39 $22.55$22.55 Size 6mm(1/4") 35mm(1-3/8") 6mm(1/4") 6/8/10/12mm 8mm(5/16") 6/6/8/10mm Tech. Vacuum Brazed Tech. Vacuum Brazed Tech. Vacuum Brazed Tech. Vacuum Brazed Tech. Vacuum Brazed Tech. Vacuum Brazed Tech. Connection 5/8"-11 5/8"-11 Hex Shank(quick Change) Hex Shank(quick Change) Hex Shank(quick Change) Hex Shank(quick Change) Condition Dry/Wet Drilling Dry/Wet Drilling Dry/Wet Drilling Dry/Wet Drilling Dry/Wet Drilling Dry/Wet Drilling