Premium quality: The trailer stake pocket are made of extra thick galvanized steel. Heavy Duty Steel Thickenss: 4mm(9 Gauge material).
Elaborate design: Fits Standard 2 x 4 Lumber Uprights Steel Stake Posts(Bracket Inner Size: 1-3/4" x 3-3/4"), used for flat truck (Lumber is not included).
Surface Treatment: Black spray painting finished. Provide long lasting great appearance, rust proof.
Center-to-center distance between the two outer holes: 5 5/8"(145mm)