High security chain, tried and tested in the streets of New YorkFour-sided trapezoidal chain links made from triple heat-treated boron manganese steel for ultimate strengthNarrow inner width of individual links prevent leverage attacksEV series 4 Disc lock has flat keyway locking mechanism for extensive holding power and high picking resistance and an ovalised, extra-strong crossbar to withstand pull force and cut force14 mm hardened steel shackleSliding dustcover protects and extends cylinder lifeLong chain is versatile and easy to useBoth chain and lock defy bolt cutters, saws, hammers and chiselsWeatherproof protective nylon covering allows coiling for easy carrying and protects paintwork100 cm/ 3 feet 3 inches longApproved to Gold Sold Secure standard