RAM Square Post Short Mount with Round AMPS Base For Posts up to 2.5" Wide

Features: Square post clamp base - front plate with a 1.5" rubber ball, a back plate and two stainless steel nuts and bolts Fits square posts with a maximum width of 2.5" and a maximum depth of 2 1/8" Short double socket arm - Overall Length: 3.5", Socket-To-Socket Length: 2.5" Round 2.5" diameter AMPS base with 1.5" ball Constructed of marine grade aluminum with stainless steel hardware Holds up to 4 lbs. RAM ball and socket system with easy adjustment points for your optimum viewing position Made in the USA  Brand: RAM Mounts Part number: RAM-101U-B-247-25 Warranty: Manufacturer's lifetime warranty