10 PCS 3/16 Inch Masonry Drill Bit Set - Tungsten Carbide Concrete Drill Bits with Four-Cross Edge & Hex Shank, 5mm Spear Point for Tile, Ceramic, Glass, Cement, Metal, Porcelain - Perfect for DIY Home Improvement, Construction, and Professional Use

15 in 1 Drilll Bits Set 1/4 Inch Drill Bits Set 12 in 1 Drilll Bits Set 3/16 Inch Drill Bits Set 3/16 Inch Drill Bits Set Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 3.7 out of 5 stars 28 4.5 out of 5 stars 42 3.7 out of 5 stars 33 4.2 out of 5 stars 35 3.9 out of 5 stars 55 Price $12.99$12.99 $12.99$12.99 $13.99$13.99 $6.99$6.99 $9.99$9.99 Bits Size 3/16 ~ 1/2 Inch ,15-Pack 1/4 Inch(5mm) x 10 PCS 1/8 ~ 1/2 Inch ,12-Pack 3/16 Inch(6mm) X 10 PCS 3/16 Inch(6mm) X 10 PCS Spec. Four-Cross Edge& Hex Shank Four-Cross Edge& Hex Shank Triangle Tip & Straight Round Shank Triangle Tip & Straight Round Shank Four-Cross Edge& Hex Shank QTY 15 10 12 10 10 Brand AVERZELLA AVERZELLA AVERZELLA AVERZELLA AVERZELLA Concrete drill bit set The set is a essential masonry tool for home decoration/woodworking/mortar repair/glass cutting and etc. Suitable for most general drills：Hand drill,impact driver,charging drill,bench drill. 10 PCS 3/16"(5mm) MASONRY DRILL BITS SET Specification: Cutter head: Cross four edge for cutter headMaterial: Alloy YG8 Carbide TipsTool holder: Hex handleColor: Black The masonry drill bits set includes: 3/16"(5mm) Masonry Drill Bit × 10 Portable Plastic Storage Case × 1 Strong YG8 Carbide Tips High quality carbide YG8 alloy with cross four-head,drill body surface with anti-rust treatment,ensures more accurate,smooth,anti-rust and wear resistant,and extend the usage life. Tighten & Non-Slip Hex handle The hex handle making the drill bits are tighter than the round handle and triangle handle, and prevents slipping,make the drilling much more easily. Wide Smooth U-Type Groove Slot U-type Groove slot provides drilling faster and more convenient chip removal,greatly improve work efficiency. Materials for dry drilling Concrete, wood,red brick,foam brick, bubble brick,plastic,Glazed tile, Antique brick,etc Materials need to be cooled Adding water or using cutting oil to cool the bit while drilling high hardness material，such as stainless steel, glass, ceramic tile, marble, granite etc. Drilling Materials The concrete drill bits can work for most common materials,please adjust the appropriate speed when drilling different material. How to avoid drill burn-out? Adding water or using cutting oil is an effective solution to avoid drill burn-out, you can use a drink bottle and drill small holes in the lid to add water for drilling Safety instructions: Adjust the speed when working,recommended drill speed:100-800 R/MIN. The larger diameter drill bits required slower speed.Ensure the workpiece must be fixed,do not knock when drilling.If there is abnormal chip removal when drilling materials with large thickness, please remove the debris in time.Always wear safety goggles and safety items when drilling.Examine the bits before use for cracks or chips, do not use damaged or bull bits