10-Piece 8MM Ceramic Tile Drill Bit Set - JOERIC 5/16 Inch Masonry Drill Bits for Concrete, Tile, Wood, Porcelain, Mirror, Plastic & Marble Walls - Carbide Tip for Strength - Perfect for Home DIY Projects, Bathroom Renovations & Wall Installations

packaging list: 10pc 8mm JOERIC 10Pcs 8mm Masonry Drill Bits Set Warm Tips 1. Recommended speed of drill set: 100-800 / MIN, the larger the diameter, the slower the speed requirement.2. Do not knock when using, the work piece must be fixed.3. For products with large thickness, if there is abnormal chip discharge, please remove the debris in time.4.Please try to keep the drill vertical and use WATER or COOLANT for lubrication when drilling. User Instruction Please try to keep the drill vertical and use WATER or COOLANT for lubrication when drilling. Specification: Material: Cr45 Tip: YG6x tungsten steel alloy Shank:1/4 hex shank Tungsten Carbide Material: Such a combination reinforces the head against cracking and in turn, makes the pieces more robust. 1/4 Inch Anti-slip Hex shank: Suitable for Lithium electric drill, hand drill and bench drill. Unique U-type Slot Design: Each drill has a unique U-type slot design. This design allows for fast penetrating and evacuation of debris as you work. Widely Application: Professional glass and tile drill bits provide smooth and accurate drilling in ceramic tiles, marble, thin iron plate, mirrors and glass. Remember to add Water or coolant when drilling.

?IMPROVED EFFICIENCY high quality & hardness YG6X tungsten steel alloy head features reduced resistance and better precision and is more wear resistant. Carbide Tipped Drill Bits Are Built For Longevity and Will Stay Sharper Much Longer Than You're Typical Steel Drill Bit.

?MULTI-MATERIAL DRILL BITSEasily Drills through Ceramic Tile, Glass, Cinderblock, Hard Plastic, Cement, Concrete, Mirrors, Windows, Travertine, Brick, Wood, and So Much More!

?SPECIAL TIP DESIGN A tungsten carbide material hardens the tips. Such a combination reinforces the head against cracking and in turn, makes the pieces more robust. This helps to prolong the life of the bits compared other alternatives in the market.

?CONVENIENT STORAGE CASEKeeps Your Masonry Drill Bits Safe & Organized in a Rust-Free Hard Plastic Container

?PACKAGE INCLUDES 10 PCS DRILL BIT SET SIZES 10pc x 8mm (5/16”) .If you have any problem with our products,please free contact with us, we will try our best to help you within 24h.