5/8" Screw Pin Anchor Shackle - Steel - 3.25 Ton package of 6 - TireChain.com
CM 3 Ton Carbon, 1/2" Shackle w/Screw Pin Anchor M650P
US Cargo Control 5/16 Inch Stainless Steel Type 316 Screw Pin Anchor Shackle - Each with a 0.65 Ton Capacity: Collated Screws: Amazon.com: Industrial & Scientific