Dimensions: roller diameter 75mm, assembly height 110.5mm, wheel radius 115mm, fork width 32mm, thread options M16 (16mm). Rolling noise: The wheel is made of rubber through a special process, highly elastic, quiet, and can effectively protect the floor. Flexible and safe: anti-steel swivel turntable, prevents leakage, allows 360-degree rotation for flexible steering, double brake design enables stopping both movement and directional rotation for secure operation. Detail design: wheels with dust cover effectively block dust and prevent winding, holder thickness is 2.5 mm, built-in new bearings, strong load capacity, each 4-inch wheel can support 250kg. Applications: widely used in houses, offices, hospitals, camps, schools, exhibition stands, small and medium-sized material transport, heavy equipment, cars, and factories. Perfect for heavy furniture and equipment. Color: As shown. Material: Metal. Package Contents: 4 x wheels. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowed error is +/- 1-3cm.