The ultimate in high security chains Thatcham approved Highest grade tensile chain available. 3 stage core hardened and case hardened for maximum resistance to hacksaws and boltcutters. High-tech weld control for optimum tensile strength. Designed using special alloys giving the best strength/weight ratio. Electro-Zinc plated and gold colour passivated for corrosion protection. All chains tensile tested and batch hardness tested. Sleeving Close woven twisted synthetic fibres. Resistant to chemicals. Shrink resistant. Abrasion resistant. Gives maximum flexibility and compacts easily. Lock - E.C. Series 130 Solid special alloy steel body hardened for hacksae and boltcutter resistance. Corrosion resistant, nickel chrome surface plating. 12mm locking bar hardened steel chrome plated. Steel ball locking of the shackle. High security radial cylinder mechanism with anti-pick pins - 1000s of key differs. Stainless steel phosphor bronze spring for durability and corrosion resistance. Recessed key entry point for cylinder protection. Rotating hardened steel anti-drill protection guard. Close shackle design means no room for boltcutters. Key retention with cylinder unlocked. Radial cylinder key works both ways up. FROM 99.99