7/8 英吋 - 1-1/8 英吋 #9 黑色氧化階梯鑽頭（2 階）
$8.99
In stock
Category: 工廠清倉特賣
Customer Reviews (4.7 / 5 · 54 reviews)
That dual-flute design really does cut through metal clean and fast; I had my hole done in no time. First step drilled perfectly clean and the black oxide finish still looks new after several uses.
I've been drilling through some fairly thick steel brackets and this step bit cut through cleanly without grabbing or jamming, even on my lower-torque drill. The black oxide coating still looks fresh after a dozen holes, and the dual-flute design really does clear chips fast. Exactly what I needed for quick work without swapping bits.
Used it to enlarge some holes in a metal electrical box and it cut through cleanly without binding. The dual-flute design really does help it work fast with my cordless drill.
Cut through this thick steel cabinet like butter with my cordless drill, and the dual-flute design definitely cleared chips fast without jamming once. Noticed a real improvement in how smooth the hole edges were compared to my old bits.
The black oxide finish on this step bit definitely helped it bite into the metal without wandering. I used it for some electrical panel work and the two steps cut cleanly without grabbing. Drilled through about 20 holes in 16-gauge steel and it's still sharp.
Used it on 14-gauge steel and the dual-flute design really made the hole come out clean—no binding or chattering at all. The 2-step sizing is handy for fast transitions between 7/8 and 1-1/8 inches.
Cut through 16-gauge steel roofing panels like butter with my cordless drill — the dual-flute design really does make for noticeably faster hole punching. No grabbing or chatter, even on the larger step.
Finally got this step bit for my cordless drill and the dual-flute design really lives up to the faster hole cutting—drilled through 1/8 sheet metal without any grabbing or chatter.
The dual-flute design actually made a noticeable difference when I drilled through some thicker metal—it cut faster than my old bits and didn't bind up once. The black oxide finish seems solid so far, no rust after a few uses in my damp garage.
Punched through a 1/8-inch steel bracket without even bogging down my drill — the dual-flute design really does clear the chips fast and clean. That black oxide coating hasn't shown a hint of wear yet after a dozen holes.