Specification Binding : Misc. Brand : ArcherPro Label : Archer USA Manufacturer : Archer USA MaterialType : Other Model : TB300 PackageDimensions_Weight : 4.82371429256 PackageDimensions : L:17.6771653363 X W:3.4645669256 X H:3.3464566895 PartNumber : TB300 ProductGroup : BISS Basic ProductTypeName : DRILL_BITS Publisher : Archer USA Size : 3" in. SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/3104ofHqQwL._SL75_.jpg SmallImage_Width : 75 Studio : Archer USA Title : Archer PRO 3" in. Diamond Turbo Core Drill Bits for use with core Drill Stand rig. for Concrete Drilling, Masonry, Cinder Blocks. Weight : 4.8 WeightUnit : pounds