Item: SHDIATOOL Aluminium case Hole Saw Diamond Hexagon Shank Drilling Bits Quantity: 10/12/13 Pcs Specification: Diamond hole saw: *Diameter: 5/6/8/10/12/20/25/28/32/35mm *model:hexagonal shank *Diamond height 10mm, Total length: 65mm *Grit:40/45,Hex Shank, Diameter of shank:8.8mm Tungsten carbide drill: *Diameter: 6mm *model:triangle shank Beveled Chamfering : *Diameter: 30/45/48mm *model:hexagonal shank Grinding rod: *Diameter: 10/20/25mm *model:hexagonal shank Application: 1.For drilling granite,marble,masonry,tile,ceramic,porcelain,etc... 2.Dry or wet use, fit with Hand Drill; Feature: 1.High-quality diamond coated,provide faster drilling and smooth finishing; 2.U-grooves Design helps remove debris and improves drilling efficiency; 3.Vacuum Brazed Technology minimizes breakage and prolongs working life. * Multi-functional: drilling, grinding, reaming, chamfering set * Portable design: easy to carry in an aluminum case. * Multiple specifications: multiple sizes of drills to meet different hole requirements