Arbor 11mm Shaft 14-30mm~ For use with holesaws up to 30mm~ Hexagonal Drive shaft~ Supplied with replaceable 1/4" HSS pilot drillTechnical Specification:CE Certified: NoConflict Materials Content : NoREACH Content Status SVHC Free or Contains SVHC: SVHC freeRoSH Regs Within Scope: NoBatteries Included: NoBattery Powered: NoCharger Included: NoMains Powered: NoHealth and Safety Text: Users and bystanders are advised to wear safety gogglesDimensions: Length: 17mm x Height: 110mmWeight: 0.065KgWarranty: 12 months. C.K products are guaranteed for 1year against imperfect materials or workmanship. Damage caused through normal wear and tear or resulting from inappropriate use, is not covered.