SpecificationBand new and high qualityAll of the shanks are 3.17mm and compatible with other mutlitool machines including Dremel.High Speed Steel.28，000 rpm maximum.FeatureUsing an engraving machine or mini-Drill various forms of cutting part provide efficient processing of materials length is 40mm.For processing of metallic and Non-metallic surfacesPackage include6pc HSS Routing Router Bit