Female-End Leveling Mount, Leveling Mount Type Swivel Boltless, Base Dia. 2 1/2 in, Height 1.25 in, Load Capacity 6,000 lb, Thread Size 5/8 In.-11, Construction 12L14 Steel, Connection Type Boltless, Bolt Length Not Applicable, Finish Black Oxide-Coated, Base Material Steel, Bolt Material Not Applicable, Swivel Angle 10 Degrees , Base Shape Round, Base Thickness 0.31 in, Base -, Socket Material 12L14 Steel