HOLO-KROME 06042 صواميل ألين 1/4-20 | محرك مقبس 12 نقطة | سبائك الصلب بأكسيد أسود حراري (100 / عبوة)

Got these for a tight hydraulic manifold repair where a standard wrench couldn't reach. The black oxide finish held up well against the oil, and the knurled body gave just enough grip to start them by hand before the hex key took over.

Finally, a nut I can get a hex key on when the whole assembly is buried in a tight spot. The 12-point socket drive made all the difference on my last frame repair, and the knurled body gives just enough grip while threading by hand. Came out of the package clean and the black oxide hasn't flaked off

The black oxide coating on these is really consistent across all 100 pieces, which surprised me for the quantity. I used them in a tight spot where a regular wrench wouldn't go, and the 12-point socket drive made installation straightforward. They hold firm without stripping.