Arbor 11mm Shaft 32-152mm~ Quick-release mechanism for fast holesaw interchange~ For use with holesaws from 32 ~ 114 mm~ Fixing pins are spring loaded for easy withdrawal making holesaw changes fast and efficient~ 11 mm hexagonal drive shaft~ 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: 40mm x Height: 110mmWeight: 0.15KgWarranty: 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.