Split Shackles Anchor Shackle - Screw Pin - 1-1/8" Galvanized Steel - 9.5 Ton - 2 P Clevis Shackle 1 2 Anchor shackles can be side loaded or used for multiple connections. Size (Shackle Body Thickness): 1"; Working Load Limit (WLL): 12.50 tons (25,000 lbs); Pin... Shackles meet dimensional and performance requirements of RR-C-271 CM Alloy Shackles are designed with a 5:1 design factor and have a strength rating approximately 50% higher than a comparable-sized carbon shackle and about 25% stronger than super strong shackles. 1-1/2" Screw Pin Anchor Shackle (SPA) - CM - 20 Ton Capacity - Slings Anchor shackles can be side loaded or used for multiple connections. Acadia National Park