For people who don't know much about drill bits, but know that steel is harder than titanium, it's a drill coating of titanium nitride or similar according to w

For people who don't know much about drill bits, but know that steel is harder than titanium, it's a drill coating of titanium nitride or similar according to wikipedia that makes it harder than stainless steel: https://en.wikipedia.org/wiki/Drill_bit#Coatings https://en.wikipedia.org/wiki/Drill_bit#Coatings