Features • M14 Female Thread Design: Features a slip-proof handle with large torsion and high bearing capacity for enhanced control during drilling tasks • Thickened Emery Coating: Uniformly applied thickened emery increases wear resistance and extends the service life of each drill bit • Premium Diamond Construction: Cutting blades made from high-quality diamond deliver superior performance compared to standard carbide or bimetal hole saws • Durable Storage Solution: Comes with an aluminum box that provides secure storage and protection for your drill bit set, ensuring longevity • Versatile Application: Perfect for drilling through marble, glass, ceramic tile, granite, and other stones without the need for water, creating clean and smooth holes Features: 1、M14 Female Thread Design: The hole saw is designed in M14 female thread, the handle is slip proof, has large torsion and high bearing capacity 2、Thickened Emery Coating: The hole drill bit is coated by thickened emery uniformly, improves the wear resistant and service life, stable and 3、Excellent Diamond Made: The cutting blade is made of excellent quality diamond, features more efficient performance than conventional carbide or bimetal hole saws 4、 and Proof: This drill bit kit is equipped with aluminum box for storage, and resistant 5、Application: This hole saw is used for marble, glass, ceramic tile, granite and other stones opening, no need to add water, can drill holes neatly and smoothly without broken edges Specification: Item Type: Diamond Hole Saw Kit Material: Diamond Color: Gold 6pcs Hole Drill Diameter: Approx.20mm/0.8in, 20mm/0.8in, 27mm/1.1in, 35mm/1.4in, 55mm/2.2in, 68mm/2.7in Hole Drill Total Length: Approx.75mm/3in Hole Drill Sand Width: Approx.15mm/0.6in Hole Drill Working Length: Approx.55mm/2.2in Female Thread: M14 Diamond End Mill Diameter: Approx.20mm/0.8in, usable length: Approx.50mm/2in, overall length: Approx.70mm/2.8in Adapter: M14 male thread, 3/8in hex shank, overall length: Approx.60mm/2.4in, shank length: Approx.28mm/1.1in Scope of Application: Marble, glass, ceramic tile, granite and other stones Package List: 2 x 20mm Diamond Hole Saw 1 x 27mm Diamond Hole Saw 1 x 35mm Diamond Hole Saw 1 x 55mm Diamond Hole Saw 1 x 68mm Diamond Hole Saw 1 x 20mm Diamond End Mill 1 x Adapter 1 x Aluminum Box 1 x Manual Note: betweendiv>1. Do not use these drills with hammer modebetween/div>betweendiv>2. Install these bits on a corded drill, not a cordless drill (doesn't have enough power)between/div>betweendiv>3. O Package List 2 x 20mm Diamond Hole Saw 1 x 27mm Diamond Hole Saw 1 x 35mm Diamond Hole Saw 1 x 55mm Diamond Hole Saw 1 x 68mm Diamond Hole Saw 1 x 20mm Diamond End Mill 1 x Adapter 1 x Aluminum Box 1 x Manual