Lincmaster HD Security Chain is manufactured specifically for its purpose from an alloy steel, grade 80, in 13mm short links which is further treated and case hardened to a depth of 40 thou. (0.040”) conforming to BS4942 To finish the product, the chain has a yellow passivated coating for longer life and user comfort. There are 17 variations available. Available with double reeving eyes for Eyeloks, Multi-Purpose Lok, Bosslok, Wall Lok, Groundlok and single reeving eye for use with HD Hitchlok. Also available in plain ended for use with padlocks in any length up to 10 metres. A 10mm version is similarly also available.