The Pitco B3901504 is a set of four 9" adjustable swivel casters designed for optimal mobility and stability. This set includes non-locking rear casters and locking front casters, ensuring secure positioning when needed. Compatible with Solstice Supreme, SG, SE, VF, and flat bottom fryers, as well as pasta cookers and rethermalizers, these casters enhance the functionality of your kitchen equipment. Built for durability and ease of use, they facilitate smooth movement and maneuverability in busy kitchen environments.