Specification Brand : Crescent BulletPoint1 : Enlarged striking cap to protect users hands and prevent mushrooming BulletPoint2 : Rawhide paint creates a high-viz design wih bold size markings BulletPoint3 : Heat treated steel for longer durability BulletPoint4 : Lacquer coating to prevent rust BulletPoint5 : Tested to 150% of the ASME Standards Color : Multi-colour ExternallyAssignedProductIdentifier : 8590137632028 ExternallyAssignedProductIdentifier1 : 037103360311 ExternallyAssignedProductIdentifier2 : 0037103360311 ExternallyAssignedProductIdentifier3 : 0738685034200 ExternallyAssignedProductIdentifier4 : 0733447538767 ExternallyAssignedProductIdentifier5 : 00738685034200 GpsrSafetyAttestation : 1 IncludedComponents : Chisel ItemName : Crescent 4" x 7-1/2" Brick Chisel - CBCH40 ItemPackageDimensions_Height : 24.13 centimeters ItemPackageDimensions_Length : 1.27 centimeters ItemPackageDimensions_Width : 10.16 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : wood-chisels Manufacturer : Apex Tool Group Material : Heat-Treated Steel Material1 : High Speed Steel Material2 : Alloy Steel MeasurementSystem : Metric ModelName : Crescent 4" x 7-1/2" Brick Chisel - CBCH40 ModelNumber : CBCH40 NumberOfFlutes : 1 NumberOfItems : 1 NumberOfPieces : 5 PackageLevel : unit PartNumber : CBCH40 PowerSourceType : hand_powered ProductDescription : * Note: * Square hole drill can not be used on an electric drill, drill square holes need to fit a square hole drill drilling (mortise and tenon machine) to use. * To avoid drill bits become overheated and get burned up due to fast rotary friction, we suggest use cutting fluid to keep the bits cold during usage. * Professional wood drill bit, suitable for construction, installation, renovation, decoration industry, etc. * The utility model in the hole drilled by the rotary body, while the impact of the use of hammer impact force transmitted to the outer, body the material crushing round hole and square head wall, a one-time processing of a square hole, and the dust can be broken slag discharged from the tube. * Material: high-speed steel * Special steel, heat treatment, HRC48~50, high hardness, lengthened core, high concentricity. * Hardness: HRC48-50 * Size: 1/4 Inch (6.0mm), 5/16 Inch (8mm), 3/8 Inch (9.5mm), 7/16 Inch (11mm), 1/2 Inch (12.7mm) * Clamping shank diameter: 19mm (Round) * Slotting flute diameter Total weight 1/4"(6.35mm) approx 115g 5/16"(8mm) approx 140g 3/8"(9.5mm) approx 165g 7/16"(11mm) approx 190g 1/2"(12.7mm) approx 220g