Blackstone chain is an ultra-strong used independently approved 10mm metal chain with hardened steel construction. This Heavy Duty 10mm six-sided square-linked chain links made of 2t HARDENED MANGANESE STEEL for ultimate strength, making it ideal for outdoor use; it also features a nylon sleeve against scratches to bicycle, motorcycle surfaces. Blackstone Security Chain Features Six-sided shaped links, much more effective against attacks from bolt cutters, saws, hammers, and chisels. It passed the Golden Bicycle Test approval, which stands for the best quality.

The package includes: 1 chain, 1 bag. It passed the Golden Bicycle Test approval, which stands for the best quality. 46 in Chain Features Six-sided shaped links, much more effective against attacks from bolt cutters, saws, hammers, and chisels. This Heavy Duty 10mm six-sided square-linked chain links made of 2t HARDENED MANGANESE STEEL for ultimate strength, making it ideal for outdoor use; it also features a nylon sleeve against scratches to bicycle, motorcycle surfaces. chain is an ultra-strong used independently approved 10mm metal chain with hardened steel construction.