Features :No need for a pilot holeTitanium coated to reduce friction and run coolerAutomatically deburr holes as you drillHigh speed steel，durable.Widely used to cut holes in a variety of material like steel， wood， thin iron， aluminum alloy， insulation boards， PVC sheet，etcSpecification :Color : Golden (as picture shown)Material : High Speed SteelSurface : Titanium PlatedShank: Triangle round handleScop : thin iron plate，aluminum，insulation panels，PVC panels 4mm thickness within the timber.Type: 10-45mm(10，15，20，25，30，35，40，45mm)，Shank:25 x 12mmTotal Size: 45 x 100mmPackage included :1 x 10-45mm Spiral Grooved Drill