Designed for use by therapists. Includes locking wheel castors so that it can be used either as a fixed or mobile stool. Height adjustment is at 25mm (1 inches) intervals and locking is by Allen key providing a rigid and tamperproof adjustment. Choice of two colour finishes to suit environment. Width: 450mm (18 inches). Depth: 370mm (14.5 inches). Adjustable height: 340 - 460mm (13.5 - 18 inches). This item is made to order - please allow 3 to 4 weeks for delivery.