First sold in 1978 as a better way to tie down gear and frames on whitewater rafts, the NRS 1" Heavy Duty Strap is known the world over for its incredible strength and versatility. Material: Polypropylene webbing Die cast, treated zinc buckle Minimum Breaking Strength (MBS): 1,500 lbs. Working Load Limit (WLL): 500 lbs. Features: Strap length etched into buckle (also woven into Iconic Blue webbing) Integrated bottle opener in buckle Woven name tag Webbing treated with UV protectant Notes: All strap lengths are measured in feet