Specification Brand : ArcherPro Label : Archer USA Manufacturer : Archer USA MaterialType : Diamond Model : VB350 PackageDimensions_Weight : 5.59092296432 PackageDimensions : L:17.5590551002 X W:7.0866141660 X H:3.7795275552 PartNumber : VB350 ProductGroup : BISS Basic ProductTypeName : DRILL_BITS Publisher : Archer USA SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/31B9-nXO-qL._SL75_.jpg SmallImage_Width : 75 Studio : Archer USA Title : Archer PRO 3 1/2" in. Aggressive Diamond Turbo Core Drill Bits with V-tip for use with core Drill Stand rig. for Concrete Drilling, Masonry, Cinder Blocks. Weight : 5.6 WeightUnit : pounds