TWO Durable eye gauze stands, one clips on the wheelchair and one is a mobile one, selling two for the price of one . I paid a little over $900 for the one for the wheel chair.- BOTH USED M3D bed mount for eye-tracking devices. Tube lengths 600 x 500 mm (24 x 20″). Lockable swivel unit, QS joints and UDS-DC included. Max. load capacity: 6.0 kg (13.2 lbs). Compatible with Rehadapt Care Bed frame clamps (not included).