Package include: 4 Pcs 75MM Transport Roller(2 Pcs Swivel Caster + 2 Pcs Swivel Caster with Brake); Dimension: Wheel diameter: 75mm; Wheel width: 21mm; Total height: 95mm; Plate size: 81x67mm; Plate hole spacing: 60x45mm(long hole); Diameter of screw holes: 8.5x13mm; Loading capacity: 50KG per roll, total capacity 200KG; Attention: It is the ideal load support for rollers in static condition or in regular operation; Performance Perfection: The wheel body is made of rubber and is characterized by shock absorption, wear resistance, cold and heat resistance. The double brake design: the brake pedal is pressed; wheeland brake plate stop at the same time to protect floors and reduce noise. Thanks to the galvanized steel plate, the casters are not limited by time and can be used both indoors and outdoors. DurableGreatrange of application: Transport casters are widely used in the furniture industry, logistics, industry, etc. and are also perfect as appliance casters, furniture casters, equipment casters.