PP AND PET MATERIALS - The suitcase wheels are made of high quality PP and PET materials. With these casters you can move your scaffolding flexibly, robustly and durable. Flexible rotation, load-bearing, you can use them for a long time.EXCELLENT WORKMANSHIP - Quiet, suitcase casters are widely suitable for trolleys, chairs, cabinets or other furniture, exquisite workmanship, important luggage repair accessories, practical. OPERATING INSTRUCTIONS - Open the case, unzip, find the location of the screw, unscrew the screw, then screw in the new wheel, saving energy and easily moving tables, seats, shelves or other heavy objects. MULTIPLE SCREWS - The overall height of the wheel is 9cm/3.5inch, the diameter of the wheel is 6cm/2.4inch, equipped with multiple screws for installation, bringing you greater convenience. FIRM INSTALLATION - Fashionable appearance, not easy to damage, does not take up too much space, firm installation, easy storage, ideal for transporting lightweight furniture and displays with peace of mind.