Game Changer for Cleaning: With Nefish mobile platform bases love being able to easily roll your washer,dryer,refrigerator or home appliance away from the wall to clean lint, dust, and debris that accumulates behind it Save Your Back and Energy: Nefish appliance cart with wheels adjustable from 16"-23", up Max 400Lbs Capacity. Once you place the items on the platform, there is no need for you to move appliances manually, it distributes weight across wheels instead of human backs and reduces strain from awkward moving positions in tight spaces One-person Operation: The locking 4 wheels dolly provides stable platform that prevents appliance tipping during operation, makes appliance relocation possible with yourself instead of professional movers, allows easily moving or rolling of your appliance, equipped with locking wheels prevent rolling during operation Tool Free Required Assemble: The dolly set includes 4 swivel wheels, each has been installed on durable PVC corner pieces. What you need to do just to install the connecting rod. The dolly can be easily assembled with instruction. No extra tool requirement. Floor Damage Protection: The furniture mover adds extra height for your appliance, protects against permanent indentations from appliance weight, reduces scratching, gouging, and denting of hardwood, tile, and laminate floors Note: Pls let The " MIDDLE LINE" sign on the tube remain in the middle position after adjusting the size,Nefish will take responsibility for all issues with the product to the end. If you have any problem about the product, pls feel relax to tell us, we will reply you within 24 hours.