Four Recessed Tie-Down D Rings, Square Trailer Cargo Tiedown Anchors, Mounting Lock Plate + Installation Bolting Hardware Accessories - Carriage Bolts, Hex Nuts, Flat Washers This is the Complete Installation Bundle. When you need to safely transport your motorcycle, snowmobile, landscaping equipment, farm tools, and other gear, these large recessed tie down anchor D rings are the absolute elite in superior tiedown anchors; they are easy to install and offer lifetime strength and versatility; the mounting plates offer incredible support to these trailer tiedown anchors, spreading the load over a larger area! See images for a DETAILED SKETCH + HOW-TO showing all DIMENSIONS + INSTRUCTIONS of these D ring pan fitting tiedowns and backplates; bundle includes 4 square 4-3/4" x 4-1/2" galvanized steel recessed pan fitting D-ring trailer tie down anchors with holes on the bottom of the pans that ensure water weeps out (assembly break strength of 6,000 pounds and a safe working load limit of 2,000 pounds), + 1/10" thick black steel trailer plates + bolting hardware Square 1/2" x 1/2" diameter bolting holes are perfect for securing with the PROVIDED Grade A ASTM A307 2.5" long 1/4" diameter carriage head bolts, hex nuts, 3/32" flat washers These tie-downs can be used in so many custom ways! Easily anchor logistic tie downs, S hook or J hook ratchet and cam straps, tarp straps, bungee cords, motorcycle tie-downs, clevis grab hook chains, ropes, and nylon soft loops on pickup truck beds, utility trailers, flatbeds, in enclosed trailers, boats, and vans by inserting the hook ends or strap webbing through the 1 1/2" x 1 1/2" (inner clearance) D rings on these recessed pan fittings This product includes 4 recessed D ring anchors + compatible lock plates + bolting hardware. If you have any questions, comments, or interest in bulk/custom orders, our USA-based customer service representatives are always happy to assist and we stand behind our products with a CONFIDENT 100% MONEY-BACK HAPPINESS GUARANTEE!