The manufacturer provides a tip-specs PDF and a product brochure on the official product page

WELLER Weller RTUS 200 K MS — Soldering Tip (RTUS Ultra)

Material selection and through-hardening are specified as design parameters on the manufacturer's information page

Mærkespænding: 600 V CAT III

VDE-isoleret gaffelnøgle 9mm Unit(s):Pcs The manufacturer provides a tip-specs. Dip coated insulation. Keys 6 16 mm: The insulation consists of 2 different colours. Keys 17 32 mm: The insulation consists of 3 different colours. For work under voltage up to 1000 V according to IEC 60900. Made of high performance alloy steel. Starting tolerance according to ISO 691. 2 3 multi layer coating with different colors indicating safety, danger or high danger. Plus a fourth in black to further protect the handle edges. This provides