The Pride of the Farm OP321 float replacement is manufactured from high density poly. The float is 3 1/2" x 4 1/2" x 3" and will create buoyancy to shut the valve on and off in your Pride of the Farm waterer.
Simply screw the appropriate Pride of the Farm float arm length into the threaded portion of the float and position either horizontally or vertically in your waterer. No bolts or adjust screws needed to attach float arm.