Description: * Get smooth rolling and full swivel action, all while protecting your floors. * Perfect replacement for home or office furniture that have hard, noisy, rough plastic wheels. * Grip Neck stem locks into a socket located inside the furniture and is easily inserted and removed. * Note: Each caster capacity is 5kg / 11 lb , total capacity for 4pcs casters is 20kg / 44lb. Please check the mounting Socket size and capacity before buying. Features: * Wheel Dia: 39mm / 1.5inch. * Capacity: 5kg / 11lb per wheel. * Style : Swivel with Brake. * Install Type: Grip Neck Stem * Stem Dia: 6.5mm / 0.26inch * Stem Length: 22mm / 0.87inch * Total Size: 53 x 37 x 70mm / 2.09 x 1.46 x 2.76inch(L*W*H) * Socket Dia: 11mm / 0.44inch * Socket Length: 16mm / 0.64inch. * Wheel Material: Plastic Package Include: * 4 x Grip Neck Stem Caster * 4 x Mounting Socket