HSS Titanium Drill Bit Hole Saw Stainless Steel Metal Alloy Cutter 12 – 100 mm. Material: M42 metal hole saw cutter drill bit, the blade is extremely sharped, with good perforation capability. High-quality metal, sturdy and durable. Smooth cutting hole saw arbor pilot drill bit cutter. Stronger and durable hole saw cutter. Also known as the universal hole cutter. Designed for installing locks, knobs, drilling holes. Bi-metal hole saw cutter cuts iron, wood, plastic, iron, aluminum pipes etc. The newly designed chip removal groove, it can discharge the chip rapidly, and will not cause the crack and stuck piece phenomenon. Hole diameter: 15mm 16mm 17mm 18mm 19mm 20mm 21mm 22mm 23mm 24mm 25mm 26mm 28mm 30mm 32mm 35mm 38mm 40mm 42mm 45mm 48mm 50mm 53mm 55mm 60mm 65mm 70mm 75mm 80mm 85mm 90mm 95mm 100mm 105mm 110mm 115mm 120mm 125mm 130mm 135mm 140mm 145mm 150mm 155mm 160mm 165mm 170mm 175mm 180mm 185mm 190mm 195mm 200mm 205mm 210mm 215mm 220mm 225mm 230mm 240mm 245mm 250mm 255mm 260mm 270mm 275mm 280mm 285mm 290mm 295mm 300mm. Use for: Wood / Plastic / Aluminium Alloy / PVC. According to your choice. Select the sizes you want from the dropdown box. All products in our store are elaborately made. We care about our valued buyers, if you have any questions, our Customer Service staff will be very glad to help you. We try our best to reply to your emails as soon as possible, however, due to the high volume of daily incoming emails and time zone difference, we may not be able to reply to your emails immediately. About item: For the functional products in our shop, we make sure that the functions are the same as the description, but the actual color and shape may look a little different from the pictures because of the technical improvement and manufacturing variance. Please contact me before you return it. Not accept returning of electronic components. Feedback is very important to us.