The Medeci Furniture Raisers can be used for chairs, beds and tables with legs, as well as for armchairs and divan beds. The units adjust in height simply by turning the body relative to the base. The raisers secure to furniture by rotating the top collar which tightens an internal strap around the leg. For fitment to furniture with castors one of two methods can be used, either by putting the universal castor adaptor around the castor and lowering it into the raiser, or by removing the castor from its socket and replacing it with the bobbin. Both accessories are included with each set of raisers. These raisers are particularly good on uneven floors as the height of each raiser can be adjusted individually.