Feature: 1. Quick Cutting: Ensuring better cutting effects with accuracy, this hole saw will largely improve the work efficiency. 2. 15Pcs in Pack: Including a variety of tools, such as 9pcs hole saw in different sizes, 2pcs twist drill bit and so on. 3. Broad Utility: Suitable for drilling holes in sheet metal, wood, plastic, dry wall, aluminium and more, very practical. 4. Good Material: The application of high speed steel material makes the hole opener rustproof and very durable for uses. 5. Easy to Install: Light in weight and compact in size as well, very convenient to install on hand and electric drills. Specification: Item Type: Hole Saw Material: High Speed Steel Product Specification: (Approx.) 1 x 19mm / 0.75in Hole Saw 1 x 22mm / 0.87in Hole Saw 1 x 29mm / 1.14in Hole Saw 1 x 35mm / 1.38in Hole Saw 1 x 38mm / 1.5in Hole Saw 1 x 44mm / 1.73in Hole Saw 1 x 51mm / 2.01in Hole Saw 1 x 57mm / 2.24in Hole Saw 1 x 64mm / 2.52in Hole Saw 1 x A2 Twist Drill Bit 1 x A4 Twist Drill Bit 1 x Drill Guide 1 x Thread Adapter 2 x Hex Wrench. Package List: 9 x Hole Saw2 x Twist Drill Bit 1 x Drill Guide1 x Thread Adapter2 x Hex Wrench1 x Storage Box Note: Pay attention to the correct operation.