Specification Brand : GMBYLBY BulletPoint1 : ● Tip: Lithium batteries below 18V are not recommended, because they are too weak and cannot be used. BulletPoint2 : ● It is suitable for electric drills, for drills and other general drills, but not for percussion drills. BulletPoint3 : ● The hexagonal handle is non-slip, not easy to slip, and the electric drill is more stable. BulletPoint4 : ● It can be used to holes in glass, ceramic tiles, plastics, concrete and other materials. BulletPoint5 : ● Hard alloy steel cutter for head, four-blade design, low cutting resistance (higher hardness than ordinary drills). BulletPoint6 : .4 inch, 12 mm / approximately 0.48 inch Package Content: 1x3mm bit 1x4mm bit 1x5mm bit 1x6mm bit 1x8mm bit 1x10mm bit 1x12mm bi Color : 8mm CuttingAngleString : 120.0 degrees ExternallyAssignedProductIdentifier : 7629470181601 ExternallyAssignedProductIdentifier1 : 0697334209294 ExternallyAssignedProductIdentifier2 : 697334209294 ExternallyAssignedProductIdentifier3 : 00088381902489 FinishType : Black Oxide GpsrSafetyAttestation : 1 IncludedComponents : Masonry Drill Bit Set ItemName : Glass Concrete Drill Bit Set For Drill Tile Drill Bit For Tile Brick And Wood For Drill Bit Masonry Drill Bits For Concrete ItemPackageDimensions_Height : 0.59 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 7401 ItemShape : Rectangular ItemTypeKeyword : masonry-drill-bit-sets Manufacturer : GMBYLBY Material : Carbide Material1 : Carbide Material2 : High Speed Steel Material3 : Alloy Steel ModelNumber : LTLKIA01220823HZD210712083RD NumberOfFlutes : 4 NumberOfItems : 4 PackageLevel : unit PartNumber : GMBYLBY ProductDescription : Glass Concrete Drill Bit Set for Drill Tile Drill Bit for Tile Brick and Wood for Drill Bit masonry drill bits for concrete Features: brand new and ● Hard alloy steel cutter for head, four-blade design, low cutting resistance (higher hardness than ordinary drills). ● The hexagonal handle is non-slip, not easy to slip, and the electric drill is more stable. ● It can be used to holes in glass, ceramic tiles, plastics, concrete and other materials. ● It is suitable for electric drills, for drills and other general drills, but not for percussion drills. ● Tip: Lithium batteries below 18V are not recommended, because they are too weak and cannot be used. ● When drilling holes in the wall, you must change the position of the steel and the steel will cause the cutting edge to crack.