KNIPEX 46 11 A0 external circlip (retaining ring) pliers, 3–10 mm rings

circlip

Use it

(import "parts/hand-tool/HT-CIRCLIP-A0.ik" as p)

In a design on ink: ask your agent for it by name, or by what it must be.

Frame of reference

Tip ends z=0, tips at x=+/-spacing/2, y=0; jaw/pivot/handles +z.