HOLO-KROME 08096 براغي كتف بمقبس مقاس 1/2" × 4-1/2" | رأس مقبس | محرك مقبس | سبائك فولاذية بأكسيد حراري أسود (10 / عبوة)

The hex drive engaged smoothly without any wobble, and the thermal black oxide finish looks clean and professional. I used one as a bearing surface for a small jig, and it's held up perfectly under repeated use.

The ground shoulder on these is dead-on—I measured it and it’s within half a thousandth. The black oxide finish feels tough and the hex drive bit seated cleanly. Solid hardware for any pivot or axle job.

Needed a replacement axle for a small jig I built, and these precision-ground shoulders fit the bearings perfectly. The black oxide finish holds up well against light rust, though I wish they came in a larger pack for the price.