HSS Cobalt Hole Saw 22mm 7/8in~ Premium grade 8 % Cobalt alloy steel construction for an extended working life~ Excellent wear resistance even at high temperatures~ For fast and clean cutting of metal, wood, aluminium, steel, cast iron, brass and plastics~ Variable pitch teeth for rapid cutting action, efficient swarf removal and reduced vibrationTechnical 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: 22mm x Height: 50mmWeight: 0.048KgWarranty: 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.