Feature: 1. Bimetal Material: These hole saws are made of bimetallic material, and the cutting parts are made of high hardness (69‑81HRC), high strength hard alloy steel, with a thickness of 2mm, strong toughness, wear resistance, and long service life. 2. High Accuracy: The sawtooth has been optimized and improved multiple times, resulting in higher cutting efficiency and accuracy. The chip groove added to the side of the hole saw can quickly discharge chips and effectively avoid blockage. 3. Drilling Materials: This bimetallic hole saw set is suitable for cutting holes in thin metal, hardwood, PVC board, plastic board, drywall, gypsum board, etc., providing clean and stable cutting, which is sturdy and reliable. 4. Specifications: This set offers 11 different sizes of hole saws, 3/4, 7/8, 1, 1‑1/8, 1‑3/8, 1‑1/2, 1‑3/4, 2, 2‑1/4, 2‑3/8, 2‑11/16 inch (19mm, 22mm, 25mm, 29mm, 35mm, 38mm, 44mm, 51mm, 57mm, 60mm, 68mm), with a maximum cutting depth of 40mm. 5. Other Accessories: The set also comes with 2 mandrels, 4 drill bits, a screw with washer, and 2 hex wrenches for convenient and comprehensive use. Equipped with sturdy storage case for easy carrying and transportation. Specification: Item Type: Bimetal Hole Saw Set Material: High Speed Steel Hole Saw Color: Red 11 Hole Saw Size: 3/4, 7/8, 1, 1-1/8, 1-3/8, 1-1/2, 1-3/4, 2, 2-1/4, 2-3/8, 2-11/16 inch (19mm, 22mm, 25mm, 29mm, 35mm, 38mm, 44mm, 51mm, 57mm, 60mm, 68mm) Maximum Cutting Depth: Approx. 40mm / 1.6in. Package List: 11 x Bimetal Hole Saws 2 x Mandrels 4 x Drilling Bits 2 x Hex Wrenches 1 x Screw with Washer 1 x Storage Case