Tungsten carbide hole saw (Tungsten Grit Tipped Hole Saw)
These hole saws will cut ceramics, bricks, hardwood, concrete, composites, granite slab, asbestos and other abrasive materials that would wear out conventional saws. They have a tough steel body with multiple carbide grits permanently bonded to the teeth. Very efficient at high speeds with base and arbor drills, they prevent binding action and cut smooth holes in the materials up to 65mm thick, They can cut big size holes in those building materials under the economic costs.
Tungsten Grit Tipped Hole Saw Set combination styles are available upon customers requests and also in other packing styles, such as double blister, single blister, blow case, clip hanger, paper boxes, canvas bags and so on.
Specification: 
Diameter: 33-113mm
Material: Tungsten grit
Packing: Blow case, double blister, or design by customer's requests.