This shock cork consists of multi strand rubber filament core enveloped in a protective 16 braid polyester sheath, resulting in an elastic cord with consistent stretch, strength and recovery which can be repeatedly stretched to double its retracted length. This durable bungee cord is available in assorted colours. Frequently used with tarpaulins & soft cover tie-downs for trailers, roof-racks, bike-racks, boat covers, and replacement cord for ute covers. 8mm x 100m. Plastic reel.