These metal framed bed raisers are width & height adjustable, providing the user with a more comfortable position whilst getting in & out of bed. The width adjustment allows the raisers to be used on a single, double, queen or king-size bed. To keep the raiser at the required height, a grub screw is inserted into the tube using an Allen key, which is supplied. The telescopic frame is easily installed & adjusted using the black knob. The raiser is fixed to the side of the bed frame using screws for security. Supplied as a pair, one for each end of the bed. Castor size 50mm (2"). Bed width 900 to 1540mm (351/2 to 601/2").