#12 × 1 بوصة براغي ذاتية الحفر (TEK) | رأس بان فيليبس مدبب | ستانلس ستيل 410 (50 / عبوة)

The #12 gauge feels beefy and the self-drilling tip chewed straight through 16-gauge steel without me having to pre-punch a hole. I've used a dozen on a metal shed frame so far, and the 410 stainless hasn't shown a hint of rust after two rainy weeks.

Had to replace some rusted-out screws on an outdoor metal shed, and these self-drilling bits cut through the old steel like butter. The pan head sits flush against the surface, and the 410 stainless seems tough enough to handle the weather.

Used a handful to fasten some metal roofing panels — the self-drilling tip went through without any pre-drilling at all. Pan head sits flush enough for my needs and the stainless steel gives me peace of mind against rust.