PWB TRAILER SAFETY CHAIN 10MM GAL PER METRE A chain attached between the drawbar and the towbar for the purpose of retaining the connection between the towing vehicle and the trailer in the event of couple failure Standards Australia AS4177.4 Manufactured in Australia, for use with trailers of up to 3500kg aggregate trailer mass. NOT suitable for lifting purposes Shackles used in conjunction with Safety Chains complying with AS 4177.4 KITO PWB confirms that the proposed combination of trailer safety chain as per AS 4177.4 and quality Grade S rated 0.5 tonnes, 0.75 tonnes and 1.0 tonnes (WLL) shackles as per AS 2741 are satisfactory to use as a connection point between trailer safety chain and the tow bar of a towing vehicle. 6mm Grade S Dee and Bow 0.5t (or above) shackles are suitable for trailers up to 1600kg aggregate trailer mass. 8mm Grade S Dee and Bow 0.75t (or above) shackles are suitable for trailers up to 2500kg aggregate trailer mass. 10mm Grade S Dee and Bow 1.0t (or above) shackles are suitable for trailers up to 3500kg aggregate trailer mass.