The grade 100 oversized master link assemblies TWN 1816 are used to assemble 2-leg chain slings and are used with big crane hooks according to the DIN 15401. The dimensions comply with the DIN 5688-3. The intermediate links enable the use of connecting links, e.g. XL-LOKs TWN 1820.
The manufacturing and testing requirements are based on the DIN EN 1677 parts 1 and 4, under consideration of grade 100 load capacities.