Technical data in the datasheet shows

with knurled grip (griffig gerändelt)

når et kontaktfelt skal være lukket af på en pæn og kontrolleret måde

Retaining ring

The product is listed as a MIL-SPEC (MS) version and is specified as non-wettable (NW)

RTP 001 C X MS Pico Conical Unit(s):Pcs Technical data in the datasheetProduct Overview This soldering tip from WELLER is an RT Nano Pico active soldering tip: RTP 001 C X MS (Item No. T0050101799). The product is a conical, bent soldering tip with a 0. 1 mm diameter, designed for precision soldering of very small micro components. Technical Description The RTP 001 C X MS is the MIL SPEC (MS) version of Weller's RT Nano Pico platform. The description indicates that the tip is ESD safe and potential free as an MS version.