The new Impact-rated TurboTip ImpactaStep cutters are a unique combination drill bit. The innovative TurboTip stepped design now allows for fast pilot drilling with low feed pressure with superb accuracy and hole finish. Each ImpactaStep cutter features 5 stepped hole sizes with each size clearly marked inside the flute, and offers combined drilling and reaming on materials up to 12mm thick. HMT 506040-SET1 VersaDrive TurboTip ImpactaStep Cutters 3pc set STAKIT Small InsertFoam set, compatible with STAKIT ETOP2 and ETOP4 Top Cases (available separately) 16, 22 & 26mm TurboTip ConeCutters Step Depth 12mm 11mm VersaDrive hex shank - 5 heavy duty drill bits in one tool - Drill new & enlarge existing holes in metal up to 12mm thick - Safety collar prevents injury & damage when using the largest step - Upgraded spiral-flute design for increased performance and swarf clearance - Heavy-duty hex shank design for secure non-slip operation - Industrial grade Titanium Nitride coating reduces heat buildup and burn-out - Impact-rated due to dual hardening process - allows up to 15X faster speed than traditional methods - Use on Impact to prevent dangerous kickback