Diamond Drill Bits Set for Hard Materials with Integrated Coolant - 11 Pieces

About this item

• 【11 Pcs 1/4 inch Hex Shank Full Size Set】1 pc quick release drill bit holder, 10 Packs of Dry Diamond Core Drill Bits 2 pieces of 3/16inch (5mm), 2 pieces of 1/4inch (6mm), 2 pieces of 5/16inch (8mm), 2 piece of 3/8inch (10mm) and 2 piece of 1/2inch (12mm). Rich combinations and enough quantity for you to use and replace for a long time
• 【Quick Replacement and Installation】Compared with all diamond drill bits sets on the market, we provide a novel quick-detach bit holder with a built-in spring design. The adapter that is included makes a really quick change of drill bits without having to key turn the opening of the drill. All you do is pull the collar back and the bit snaps in or out, saving time and effort
• 【Dry Drilling Innovation Design】Each diamond drill bit is integrated with wax lubricant inside, which will melt and cool the bit tip to prevent diamond loss and prolongs the life of the bits. To maintain optimal performance, let the bit cool after each hole
• 【Clean Drilling】Our dry diamond core bit set is designed with vacuum brazed diamond technology, capable of drilling clean holes in all types of tile, porcelain, granite, ceramic, glass, marble, stone, masonry (not suitable for wood)
• 【Easy to Carry and Use】This set comes with a portable storage case with a handle for convenient use and store. If you encounter any problems in using the products, please feel free to contact us for satisfactory customer service