Superquad cross link chain is a high grade, square section chain made from special alloy steels for maximum strength. Through - and case hardened for high resistance to hacksaws and boltcutters. Bright zinc plated with blue thermoshrunk sleeve. Heavy duty, High security rating. Sold Secure tested to reduce crime. Available 8mm and 10mm - 1.2mtr, 1.5mtr and 2mtr. For added security you can also buy a unique design armoured chainlock to suit these chains in this section.