HOLKIE Leveling Stem Castor Wheels Set of 4 Heavy Duty with Ratchet Handle, 1/2" and M12 Screw Size Retractable Castors, Adjustable Casters for Furniture, Workbench, Machine, Total Capacity 1500KG

TWO STEM SIZE AVAILABLE: Our threaded leveling castors come with two sizes of screws, M12-1.75 x 33mm and 1/2" -13 x 1.299". Prioritize compatibility. EASY TO ADJUST: These retractable castor wheels come with a new handle design which makes height adjustment very easy and simple. HIGH LOAD CAPACITY: Our set of 4 heavy-duty castors has a load capacity of 3300 lbs/1500 kg for a variety of equipment and workbenches. FIRM & DURABLE: These retractable castors are made from a variety of materials for great durability and to reduce vibration and shock. MULTIPLE APPLICATION: Our industrial caster wheels are suitable for both indoor and outdoor use and are perfect for a variety of applications such as worktables, furniture, shelves, carts, lab equipment and more.