An NL-19B is typically a flanged nylon ball transfer unit. It acts as a 360-degree, omnidirectional caster used to move or rotate materials, curved lumber, or packages on a workstation. It features a 19.05 mm (or 3/4-inch) main ball and supports loads of up to 15 kg (approx. 33 lbs). Model NL-19B Brand ZH Material Plastic Type precision P0 P6 P5 P4 Product Description The NL-19B is a ball transfer unit, also known as a universal ball, bullseye wheel, or ball transfer unit. It