Features: 1. Made of premium steel with high hardness, abrasion resistant and long lasting. 2. The blade is extremely sharped, with good perforation capability. 3. Professional and practical design, beautiful appearance, easy to carry and use. 4. Can be used to make large holes in wood, thin steel sheet, aluminum alloy and other soft metal sheet. 5. The newly designed chip removal groove, it can discharge the chip rapidly, and will not cause the crack and stuck piece phenomenon. Specification: Condition: 100% Brand New Item Type: Hole Saw Material: Steel Diameter: Approx. 105mm / 4.1in, 115mm / 4.5in, 120mm / 4.7in, 125mm / 4.9in, 140mm / 5.5in (optional) Package List: 1 * Hole Saw 1 * Core Drill Bit Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1、Made of premium steel with high hardness, abrasion resistant and long lasting. 2、The blade is extremely sharped, with good perforation capability. 3、Professional and practical design, beautiful appearance, easy to carry and use. 4、Can be used to make large holes in wood, thin steel sheet, aluminum alloy and other soft metal sheet. 5、The newly designed chip removal groove, it can discharge the chip rapidly, and will not cause the crack and stuck piece phenomenon.