【Top Quality】Our glass hole saw with Positioning pilot bit is made of high-quality diamond, solid hardened steel body, and the surface is designed with nickel-plated coating, ensuring its high hardness, rust proof, anti-corrosion, sturdy and durable； 【Accurate Positioning Pilot bit Design】Each tile hole saw is designed with a detachable Positioning pilot drill bit, and the cutter head of the pilot drill bit is also designed with diamond coating, which makes it sharper and more durable, and efficiently fixes the drilling position of the hole saw to cutting holes quickly. 【Size】Cutting Dia.：2-1/2Inch(64mm), Cutting Depth: 1-3/16Inch(30mm), Total length: 2-3/4Inch (70mm),Triangular Shank Dia.: 3/8Inch(9.5mm). 【Sharp & Clean Holes】This diamond Tile Core drill bits with thicker diamond coating make the edge of the groove sharper, can cutting precise flat bottom holes with no chipping on smooth surfaces, such as ceramic tiles, ceramics, glass, marble, granite and terrazzo.(Cutting depth up to 1-3/16Inch) 【Easy to Use】The operation is simple, without the need for other special guide tools. Use the tile hole saw installed with the positioning drill bit to position the hole, remove the positioning drill bit after positioning, and then directly cutting the hole with the tile hole saw. Note: During the cutting process, remember to add water or coolant to extend the life of the diamond hole saw. 【Package】Include 1pc Diamond Hole Saw Cutter ,1pc positioning pilot drill bit and 1pc wrench，each Diamond hole cutters set are individually cased in plastic box and each bit is also oiled (Prevent rust). Feature:
1）High Quality Materials: Made from high-quality diamond, solid hardened steel body,ensuring its high hardness and long-lasting performance;
2)Unique Positioning Pilot bit Design: Designed with a detachable Positioning pilot drill bit, allowing this glass hole saw can easily open holes without the assistance of other special guide tools;
3)Widely Application: Can be used for Cutting holes on smooth surfaces such as ceramic tiles, ceramics, glass（Except tempered glass）, marble, granite and terrazzo.

Specification:
Material: High-quality Diamond + Hardened Steel Body
Triangular Shank Dia.: 3/8 Inch(9.5mm)
Cutting Dia.：2-1/2Inch(64mm)
Package Included:
1pc Diamond Hole Saw Cutter
1pc positioning pilot drill bit
1pc wrench

Note: During the Cutting process Remember to add water or coolant to extend the life of the hole saw.