These flat nylon eye & eye slings are super heavy duty lifting slings borrowed from industry where they are used for heavy lifting. The slings feature tapered, twisted eyes to help position the hardware correctly and ensure that the sling lays flat beneath the load. Nylon slings provide incredible work loads and break strengths. These slings are listed with the manufacturer's ratings based on a 5:1 design factor where the Working Load Limit (WLL) equals one fifth of the Breaking Strength (Brk Str.)