Sewers Vision 3004Tough, knock resistant ABS edging surrounds the top of the table for increased durability. 1 thick table top for extra strength. Tilts for storage by means of a pull release catch mechanism to give back valuable floor space to your room. Easily height adjustable by simply turning a crank handle. Can be raised to work on above other furniture in your room. A large height adjustment range to suit virtually any user. Can be lowered to sit at, or raised