6PCS HSS Cobalt Titanium Step Drill Bit

Set includes five standard step drill bits that can replace 50 individual drill bits – High-speed steel with titanium coating to easily cut through steel, aluminum, copper, plastic, and wood – Automatically deburr holes while drilling to keep the drill bit clean. – Includes a center punch that delivers an automatic, high-impact, spring-loaded strike through adjusting the cap – The centre punch has brass body, deeply knurled surface, and is carbide-tipped bit – Double cutting blades and X-type openings design ensures a faster and smoother cutting – 3-sided shank design prevents slip in drill chuck