The housing and wheels of the furniture castors are made of high-quality plastic. The design of the modern furniture castors is attractive and functional. Their soft running surface ensures excellent manoeuvrability on all hard/sensitive floor surfaces. Two of the castors are equipped with a wheel lock/brake, which holds the furniture firmly and securely in the desired position. Castors & wheels from Wagner are branded products and tested for quality, safety and durability. Please note: Do not use on unsealed floors (parquet / marble etc.).