4 英吋 HOLE DOZER 雙金屬開孔鋸，附 3/8 英吋心軸與導向鑽頭

Cut through 3/4-inch plywood like butter on the first try, and the pilot bit stayed perfectly centered. The arbor felt solid and didn't slip at all during use.

The Rip Guard tooth design lived up to its promise while cutting through thick metal studs—didn't chip or dull after a dozen holes. The arbor and pilot bit combo made swapping sizes quick, which saved me time on the job.

Cutting through cast iron pipe was effortless, and the pilot bit stayed perfectly centered the whole time. The tooth form really does hold up without dulling, even after multiple cuts. This saw feels like it’ll last through a lot more jobs.

Used it to cut through some thick steel electrical box knockouts and the pilot bit didn't wander at all. The tooth form held up way better than my last cheap hole saw, so I'm glad I grabbed one on clearance.

Cut through a full 2x4 in under 10 seconds—the tooth design really bites hard without grabbing. The pilot bit stayed dead center even on a curved cut, which surprised me.

This saw chewed through a stack of 3/4-inch plywood without even slowing down, and the pilot bit stayed perfectly centered. The tooth design really grips the material instead of skipping like my old set used to do.

Cut through a stubborn steel door frame like it was butter—the tooth form really held up without any wobble. The pilot bit stayed dead centered the whole time, which made the job a lot cleaner than I expected. Only wish the arbor fit my drill chuck a bit tighter, but it worked fine once I tightened the screw.

Bored through a stack of 3/4-inch plywood for a workbench project, and the pilot bit stayed dead center the whole time. The bi-metal teeth didn't show any wear after a dozen cuts, which impressed me. Happy with how cleanly it chewed through.

Cut through an old cast-iron drain pipe in under a minute without the teeth chipping—the Rip Guard really does live up to its name. The pilot bit stayed centered perfectly, no wandering at all.

Had to cut through some thick stainless steel shelving at work, and this bi-metal hole saw powered through with no issues at all. The pilot bit kept everything steady and centered, making a clean hole every time. Feels like a solid tool that will last through many more jobs.