1. Name: handle.
Material: bakelite (KU).
Surfaced color: black.
2. Name: retractable mechanism.
Material: steel (ST).
Surfaced process: matt black (B).
1030-18-M5, 1030-21-M5, 1030-23-M6, 1030-26-M6, 1030-28-M8, 1030-31-M8.