طقم منشار ثقب 14 قطعة مجموعة قواطع ثقب BI-METAL HSS منشار ثقب Drill Hog®

Picked this up mainly for the 2-1/4" and 2-1/2" sizes and the M7 steel cut through my door frames way cleaner than the cheap set I had before. The mandrel swaps between sizes without much fuss, and the pilot bit stayed put the whole time.

Cut 2-1/2" holes in pine and oak with zero wobble, and the M7 steel teeth still feel sharp after a dozen cuts. The pilot bit and mandrel stayed tight the whole time, no slipping like my old set did.

Bored nine holes through 3/4" plywood for a speaker cabinet and every size I needed was right there in the case, no hunting for extra mandrels. The pilot bit stayed put without wandering, which was my main worry with a kit this cheap.