5Pcs 16-30mm Hole Saw HSS Drill Bit Set Hole Saw Drill Body ReamerFeatures:Material: HSS Outer Diameter: About 16mm/0.62'', 18.5mm/0.72'', 20mm/0.78'', 25mm/0.98'', 30mm/1.18'' Length: Approx. 65mm/2.55" Shank Diameter: Approx. 9mm/0.35" Color: As the picture shows Quantity: 5 Pieces and Practical Provide 5 kinds of H.S.S cutter, meet your different needs Ideal for installing locks, knobs in doors and cabinets, or drilling larger diameter holes through desks, etc. Cuts steel, stainless steel, copper, brass, aluminum, fiberglass, Formica and other laminates in secondsPackage included: 5 x Drill Bits (Packed in Key)Note:1. Please allow 1-5mm errors due to manual measurement2. The item color displayed in the images may be showing slightly different on the computer monitor since the monitors are not calibrated by themselves