We Also Have Various Other Models Of Cnc Turning Tools And Accessories. If You Need It, Please Contact Us.Only Personnel With Professional Skills Are Allowed To Use It. Please Wear Safety Helmets, Goggles And Other Safety Equipment When Using.Features:1. and high quality.2. Made of high quality alloy steel, the blade is extremely sharped, and resistance to cutting. Have good perforation capability.3. Effective length of 20mm, can process the thick steel plate, and the thick-walled metal pipe material perforation.4. When cutting Chilled materials, cutting edge should be filling cooling liquid.5. Can be clamped on hand drill and bench drill, can be used for thick steel plates, cast iron, stainless steel, non-standard angle iron and other metal open hole.Specification:Type: Core Drill BitMaterial: Alloy body and carbide TippedShank Dia: 9mm10pcs 16-50mm Set: 16mm 18mm 20mm 22mm 25mm 26mm 28mm 30mm 40mm 50mm10pcs 16-53mm Set: 16mm 18mm 19mm 22mm 25mm 30mm 35mm 42mm 50mm 53mm13pcs 16-53mm Set : 16mm 18mm 20mm 22mm 25mm 26mm 28mm 30mm 35mm 40mm 45mm 50mm 53mmNotePlease allow 1-3mm error due to manual measurement.Due to the difference between different monitors, the picture may not reflect the actual color of the itemPackage Including: 1 Set Metal Hole Saw Cutter