【ADJUSTABLE SIZE】- This movable base can be adjusted for 18-1/2 inches to 27-3/5 inches objects as the second main picture show, you can effortlessly roll a wide variety of furniture through your house | 【UNIVERSALITY】- The mobile roller is used for the bottom of appliances like portable washing machines, washer and dryer, refrigerator or mini fridge | 【360-DEGREE WHEELS】- Equiped with 360-degree 4 locking swivel wheels, that you can move it easily or lock wheels to make it fixed in order to prevent collision. | 【PRODUCT PARAMETER】- Height: 3-3/4 inches. Weight Limit: 300 lbs. Includes: 4 locking swivel wheels, 4 sturdy PVC corner pieces, 4 sturdy stainless-steel poles and screw tool. | 【EASY TO ASSEMBLE】- The instruction is contained. According to the instruction, you can easily complete assembly. Our dolly rollers will be your trustworthy choice.

【Workbench Casters Construction】: The heavy duty casters, constructed with durable solid steel and premium urethane casters, which can move smoothly and easily support up to 800 lbs per set. The wear-resistant workbench casters can work smoothly and steadily for heavy duty workbenches tables and equipments. | 【Retractable Casters】: Step on the retractable pedal then lift the workbench to the fixed

【Durable Construction】 - The heavy duty wheel casters, constructed with durable solid steel and premium urethane wheels, which can move smoothly and easily support up to 800 lbs per set. The wear-resistant wheels can work smoothly and steadily for heavy duty workbenches tables and equipments. | 【Retractable Leveling Wheels】- Step on the pedal then lift the workbench to the fixed height. Pay attention not to step on the edge of outer side, just put your foot at the middle point of pedal. The casters cannot work on rocky road, but it works well on smooth road. | 【360-Degree Maneuverability】- Equiped with 360-degree swivel bracket, the wheel can turn to any directions. Move the workbench, table, cabinet and equipment to the destination more easily and flexibly. | 【Anti-slip Pedal】- The pedal is framed with powder coating and satin black finish, marked with anti-slip stripes on its surface which means anti-rust and more durable for use. Equipped with the wear-resistant urethane wheels can work easily. | 【Complete Equipment】- The workbench casters include Four 2-1/2" swivel urethane casters, 24 mounting screws, 4 mountingbolts 1 wrench and a full instruction. The quick and easy installation lays the foundation for your moving object.

【DURABLE CONSTRUCTION】- The heavy duty wheel casters, constructed with durable solid steel and premium urethane wheels, which can move smoothly and easily support up to 600 lbs per set. The wear-resistant urethane wheels can work smoothly for heavy duty workbenches Tables and Equipments. | 【EASY OPERATION】- It just takes one foot to lift workbench table and equipment. Step on the pedal then lift the workbench to an fixed height. Pay attention NOT to step on the edge of outer side, just put your foot at the middle point of pedal(see image 5). The casters cannot work on rocky road, but it works well on smooth road. | 【360-DEGREE MANEUVERABILITY】- Equiped with 360-degree swivel bracket, the wheel can turn to any directions. Move the workbench, table, cabinet and equipment to the destination more easily and flexibly. | 【MOUNTING SCREWS INCLUDED FOR EASY INSTALLATION】- We offer 16 screws that is enough for installation, but it depends on you whether to install 24 screws or not. Better to make holes in workbench legs with a driller(not included) before installing casters. | 【ANTI-SLIP PEDAL】- The pedal is framed with powder coating and satin black finish, marked with anti-slip stripes on its surface which means anti-rust and more durable for use. Equipped with the wear-resistant urethane wheels can work easily.