طقم موسعات ثقوب مدببة Drill Hog® 4 قطع عالي الموليبدينوم

The five spiral flutes clear chips way better than the straight reamers I used to borrow, no more stopping every few seconds to blow out the hole. The tri-flat shank locks into my drill chuck without slipping, which was my main worry. Enlarged a bunch of bolt holes in steel plate and every one came

The M2 steel cut through my annealed 5/8" holes like butter, and the reverse spiral flutes actually pulled chips out instead of packing them in. I've used these on a dozen holes now and the tri-flat shanks haven't slipped once in the chuck.

Bought these to clean up a set of mismatched bolt holes on a trailer project and the M2 steel cuts way cleaner than the cheap reamers I've used before. The tri-flat shank keeps them from slipping in the chuck, which was my main gripe with round-shank ones. Four sizes cover pretty much everything I n