lifting sling belt group 008652386933296 http://www.xssling.com/en_flatsling.htm)produce Duplex webbing sling, duplex flat webbing lifting slings are made from high tenacity polyester webbing; colour coded for ease of identification for lifting and is manufactured to EN 1492-1:2000. Duplex Slings are manufactured from double layers of webbing, either terminated in a metal end fitting or, more popularly, sewn back upon themselves with a high tenacity polyester fabric to form a reinforced Eye, which provides greater durability than the traditional leather eye. The duplex flat webbing slings are stitched close to the eyes which are 9" long bearing to bearing. Endless slings, however, are manufactured from single thickness webbing sewn in a continuous loop with an overlap.