Crosby® Screw Pin Sling Saver Shackle | S-281 - 8.5 TonCrosby S 281 8. 5 Ton Web Sling Shackles Optimized for Wide Sling Support & Heavy Lifts The Crosby S 281 8. 5 Ton Web Sling Shackle is built to perform in heavy duty synthetic sling applications. Its squared bow design provides a broader sling bearing surface, which helps distribute tension evenly across the sling. This results in reduced wear, better alignment, and up to 15% greater lifting efficiency compared to traditional anchor shackles or eye