• Set of 5 silicone wheels designed for office chairs, with stem measurements of 11 mm in diameter and 22 mm in length. • Compatible with most office chair models (except chairs with a 10 mm stem). • Flexible and silent 360° rotation, thanks to shockproof technology and double wheel design. • Each wheel has a diameter of 75 mm (3 inches) and the set supports up to 250 kg of weight. • Made of high-quality polyamide and polyurethane, they offer resistance and durability. • Effectively protect all types of hard floors, preventing scratches and marks. • Quick and easy installation, no tools required: simply remove the old wheels and attach the new ones.