These drills are the strongest and most durable on the market! You can buy all Dewalt titanium coated bits! But these beats cannot be compared. They are a bit more expensive but if you need to do a lot of drilling in wood, metal and stainless steel this is my choice and a machinist I know personally recommended Kan Kut bits. Thank you for the quality craftsmanship you put into these drill bits. Jeff Wilbanks