HIGHDRIL Core Drill Bit Set - 5pcs/Pack 1/4 Inch (6mm) Carbide Hole Saw Drill Kit with Qucik Fit Shank for Wood Porcelain Tile Concrete Ceramic Plastic Marble, Locating to Drilling Holes

Usage: General purpose product, can drill holes in a variety of materials, and can assist other drill bits to provide more accurate drilling and positioning.Applicable materials:Dry Use(softer materials): wood, plastic (PVC pipe), foam bricks, antique bricks, glazed bricks, red bricks, cement, concrete (need to avoid reinforced concrete), and so on;Materials to be drilled with water or coolant (harder materials): glass tiles, full porcelain tiles, ceramics, marble, glass, etc;Applicable machines:1, conventional hand drill, table drill and rechargeable drill (lithium drill) and other types of machines to use; if you choose lithium drill, it is recommended to choose a power higher than 24V, otherwise it is easy to have insufficient power to drill the situation;2, can not use impact and hammering mode; (no need to position 45 °, just drill vertically)Note: Harder materials need to add water or coolant to use, otherwise it will seriously affect its service life;

• ✅ Specification: diameter 6mm, blade length 12mm, total length 77mm, working depth 47mm, shank diameter 6.3mm, quick-fit shank.
• ✅ Wide Application: Softer materials can be drilled dry, such as wood, plastic, foam tiles, glazed tiles, cement, concrete (excluding reinforced concrete), etc.; harder materials need to add water or coolant, such as glass tiles, porcelain tiles, ceramics, marble, glass, etc.
• ✅ High-quality materials: The tip of the drill is welded with high-grade industrial-grade tungsten carbide, which has good wear resistance and can easily penetrate many materials, and the drill body is made of selected high-strength steel matrix, which has a long service life.
• ✅ Tip Phillips Design: The precision Phillips tip design reduces drill bit slippage and drift. It enables drilling on the one hand, and on the other hand, it can also assist other drills for accurate drilling and positioning.
• ✅ Applicable machines: Common electric drills, bench drills and cordless drills (lithium-ion drills) and other types of machines. The speed of electric hand drill should be 2000-5000RPM.