Strength and corrosion resistance are built into this zinc plated, from reinforced steel swivel. The 3/4" pin has a shock absorbing spring and a 3° lean back for maximum comfort. The swivel rotates 360° and is designed for use with the 3/4" pin pedestals and bases. The four slotted holes are on standard seat mount pattern and accept 5/16" diameter fasteners. Available Skin pack or bulk pack.