Surface spray can protect the adapter from sun and rain. Function: Used to work well with chains and ratchet binders for securing your load or for tow anchors. Grab hook is grade 70 rated at 6,600 lb. Fits:5/16 chains Install: No cutting, No Drilling Required. You can install directly with the bolts. Package Includes 3 pack 5/16in bolt-on grab hook and necessary mounting hardware (Bolts with Washers and Nylon Lock Nut). 3X 5/16 Bolt-On Grab Hooks For Skid Steer Loader Tractor Bucket Chains Steel. Condition: 100% Brand New. To prevent rust and corrosion. Grade 70 rated at 6,600 lb. Install: No cutting, No Drilling Required. 3 pack 5/16in bolt-on grab hook and necessary mounting hardware (Bolts with Washers and Nylon Lock Nut). Steer Loader Tractor Bucket Chains. Skid Steer Loader, Tractor.