Features Enhanced Durability and Longevity: Featuring a robust 2mm thickness, this tool offers exceptional heat resistance, extending its lifespan by up to 50% for reliable performance Features: 1、The product has the characteristics of anti-, thickn 2mm, durability, good heat resistance, and the service life can be extended by 50%. 2、The product has sharpn teeth, which is very suitable for hole cutting on metal, wood, PVC board, plastic and dry wall. The cutting effect is clean, smooth and high accuracy. 3、Made of high？speed steel, cutting speed is fast and neat, and wear？resistant. 4、The portable storage box can help you keep the saw blade accories neat, easy to carry, and avoid loss. 5、Profional and practical design, easy to carry and use. and it has better stabilty and safety. Specification: Item Type: Hole Saw Blade Cutter Kit Material: M42 high speed steel Model: 19/sets Color: Yellow Box Size: Approx. 36 x 22.5 x 6mm / 1.4 x 0.9 x 0.2in(LxWxH) Size: Approx. 76mm / 3in 68mm / 2.7in 57mm / 2.2in 51mm / 2in 44mm / 1.7in 38mm / 1.5in 25mm / 1in 35mm / 1.4in 22mm / 0.9in 32mm / 1.3in 20mm / 0.8in 29mm / 1.1in 19mm / 0.7in Package List: 13 x Hole Opener 2 x Hex Wrench 2 x Drill Bit 1 x Screw Wrench 1 x Accessory Note: betweendiv>1. When using the hole opener, please be sure to properly control, select, compare, tachometer, and constantly add coolant to prevent the cutting edge from cracking. If you use a high？speed gun drill, you should control the switch during operation. One open and one close to reduce the speed as much as possible, and it is widely used for drilling holes on various electric drills of bench drilling machines.between/div>betweendiv>2. For the iron plate with a hole of 5mm or more, first open about 1mm deep, and then use a positioning drill to drill a hole along the saw gap, which makes it easier to remove iron chips.between/div> Package List 13 x Hole Opener 2 x Hex Wrench 2 x Drill Bit 1 x Screw Wrench 1 x Accessory