E Track Ancra Tiedown Fittings 7,500 lb. Capacity Tie Downs - 4 Pack This listing is for FOUR (4) tiedown attachments. Each fitting has a 7,500 lb.* cap. - The base has FOUR heavy plates. The plates (1/8" thick) are held together with four 3/16" rivets The 5/16" thick stainless steel ring measures 1-7/8" in diameter. The attachment is gold zinc coated to inhibit corrosion.