Dewalt dt7926 extreme 2 metal drill bit 1 13mm set of 29 dewalt dt7926 xj this 29 piece metal drill bit set from dewalt feature an extreme 2 tip which starts on contact for clean accurate holes and reduces lock up on breakthrough they also have a tapered web which provides greater durability to reduce breaking while size markings are located above the shank to prevent wearing away the bits also incorporate a no spin shank that eliminates the frustration of bit spinning in the chuck all