Drill Hog USA ثنائي المعدن كوبالت طقم ثقب مجموعة قواطع HSS 7 قطع

I was worried the 7/8" saw would wander on my first cut, but the mandrel kept everything dead straight through half-inch oak. The cobalt teeth still bite hard after a dozen holes, way better than the cheap carbon set I burned through last year. Pilot bit never slipped once.

Cut clean 1-1/4" holes through 3/4" plywood for running conduit, no tear-out on either side. The cobalt teeth still feel sharp after about twenty holes, which honestly surprised me at this price. Pilot bit tracked straight without wandering.

The 7/8" saw went through a solid oak door like it was pine, no wobble at all. Having the pilot bit and mandrel already in the kit saved me a trip to the hardware store. The cobalt teeth still feel sharp after a dozen holes.