固定螺絲，M8x20，內六角狗頭點，10入

The hardened tip on these dog point set screws grips the tool bit securely without marring it, a big improvement over the old ones I was using. I've already swapped them into my boring bar holder and the knurling tool, and the extra length gives better thread engagement.

The dog point seats perfectly in the tool holder's groove, and the M8x20 length is spot-on for my AXA setup. These are solid replacements that haven't stripped or shifted after a week of heavy turning.

These are exactly what I needed to keep my tool holders working smoothly, and the 10-pack means I've got spares on hand for the next time. The M8x20 threading matched up perfectly without any fuss, so I'm set for a while.