Hitachi 728023-1/4-Inch Diamond Core Bit with Water Cooling System
The Hitachi 728023 1/4-Inch Diamond Grit With Water Feature Attachment Drill Bit drills through glass, marble, class 5 porcelain, granite and slate. It significantly outperforms the standard carbide glass and tile bits on the market today, both in speed of drilling and the number of holes that can be drilled per bit. These bits feature raised lips with diamond grit particles. This process allows the diamonds to adhere to the bit and not grind down as quickly as other sintering processes. To use freehand, the user accurately positions the bit at an angle to pilot the hole. A convenient core removal ejection slot pushes the core material out from the bit ensuring hole after hole can be drilled without delay. The Hitachi diamond grit drill bit bodies are constructed of hardened and tempered thin wall alloy steel. They require water lubrication during use. This can be simply applied with a spray bottle � producing a small puddle of water that is spiral fed down the reverse flute threads on the bit to continuously supply water to the cutting edge, cooling the but tip and extending its life. Additionally, if the hole is being drilled into a vertical surface, Hitachi offers a Drill Guide and Water Cooling System. The glass and tile bit measures 1/4-inches in diameter. The Hitachi 728023 1/4-Inch Diamond Grit With Water Feature Attachment Drill Bit is warranted to the original purchaser to be free from defect in materials and workmanship for a period of 30-days from the original purchase date. Every Hitachi accessory is designed to the highest standards and is rigorously tested for both performance and durability. Since its inception, Hitachi has pioneered innovative technologies that have improved the quality of craftsmanship worldwide. Hitachi is a leader in power tool research and development and has achieved many firsts in the power tool industry. Today, Hitachi continues the tradition of innovation and engineering with new features in addition to classic quality.