This means that the bit is used for driving Pozidriv PZ1 screws in the contexts specified by the manufacturer

Standards: MIL‑SPEC / IPC (stated by manufacturer)

mattkromet

Included parts: Removable tote/tray (tools not included)

This chisel soldering tip from Weller

Bøsning universal XUB-G sort 600-1000V CAT II - 20A MIL57982101111 This means that the bit. Insulated, rigid, 4 mm, accepting spring loaded 4 mm plugs with rigid insulating sleeve. Machined brass. The socket is surface mounted, assembled flush, or pressed into pre drilled panels of plastic, metal, etc. Threaded bolt M4. Optional: Protective cap SD XUB to cover up unplugged, unused sockets (Protection degree IP67).