Heavy Duty Caster Wheels Set of 4, 75mm Swivel Trolley with 4 Brakes, No Floor Marks Silent Castors for Furniture, Rubbered Trolley Wheels Load Capacity up to 450KG, 3 inch, Free Fitting M6/M8 Screws

【Safe Dounle Lock System】: This castors set includes 4 wheels, and each wheel has a double safety brake. When this brake is pressed down, both the wheel and the swivel are locked simultaneously, holding the equipment firmly in place. Locking castors design make it more safe when used as rolling workbench castors, industrial castors, heavy-duty castors, especially on uneven surface.
【Superb Double Bearings】: Heavy-duty castors have built-in double bearings, made of high-quality steel, double ball precision bearings, with supporting steel sleeves, which make the wheels roll smoothly and without sound.
【High-quality raw materials】: The wheels of the castors are made of polyurethane (PU) material, which has the functions of shock absorption, wear resistance, and no damage to the floor.
【Multi-scene Application】: Lockable furniture workbench castors can be widely used in workbenches, wooden boxes, kitchen tables, cabinets, furniture and other items commonly found in workshops, garages, kitchens, factories and offices.
【Easy Installation】: In order to make it easier for customers to install at home, we provide two assembly accessories, one kit includes: 20 screws and 20 washers, and the other kit includes: 20 bolts and 20 nuts.