Specification Brand : Aexit BulletPoint1 : Shank Diameter: 12mm/0.5",9mm/0.35"; Overall Length: 81mm/3.2" BulletPoint2 : Material: Metal; Weight: 182g BulletPoint3 : Package Content: 2pcs x Hinge Boring Bit; Boring Diameter: 35mm/1.4" BulletPoint4 : Product Name: Hinge Boring Bit BulletPoint5 : Main Color: Silver Tone,Blue Color : Blue,Silver CompatibleMaterial : Glass ItemName : Aexit 35mm Cutting Hole Saws & Accessories Dia 9mm Shank Hinge Boring Drill Bits Wood Cuting Hole Saw Sets Tool 2pcs ItemTypeKeyword : hole-saw-sets Manufacturer : Aexit Material : metal ModelNumber : modle PartNumber : f190412ae048231 ProductDescription : The hinge boring bit is specialized in opening holes in soft and hard wood. Twin scribers and centering point to give the perfect solution to repeated, and accurate hole cutting time after time. Should work with an electric drilling tool, which is not included here. ProductSiteLaunchDate : 2018-09-29T06:55:07.042Z Style : Resistance SurfaceRecommendation : Wood,Metal UnitCount : 1