Description: * Swivel Casters 1.5 Inch Solid Rubber M8 x 15mm Screw Threaded Caster Wheels Black 10 Pcs. * Get smooth, quiet rolling and full swivel action, all while protecting your floors. * Perfect replacement for home or office chairs that have hard, noisy, rough plastic wheels. * Note: Each caster capacity is 15kg, total capacity for all 4 casters is 45kg (calculated by 3 casters ). Because when the floor is uneven, there will be only 3 casters bearing weight. Features: * Wheel Dia: 40mm / 1.5inch. * Capacity: 15kg / 33lb per wheel. * Style : Swivel, no Brake. * Install Type: Threaded Stem. * Thread Dia: 7.8mm / 0.3inch * Thread Length: 15mm / 0.58inch * Wheel Material: Solid Rubber * Color: Black , Silver Tone Package Include: * 10 x Threaded Stem Caster.