Due to the patented "Butt System", it is extremely robust and does not wobble. The top and middle shelf can be converted to a flat or flat surface. ● You can choose between 2 types of casters for the main body, 4 wheels, 2 freely, and 2 fixed. The middle shelf can be adjusted with a 2.0 inch (50 mm) pitch; Optional floor stopper is available. Patent Registration: No. 3437988; Outer Dimensions: W 29.5 x D 19.7 x H 34.6 inches (750 x 500 x 880 mm); Color: Stainless steel; Weight: 55.3 lbs (25 kg); Material: SUS430: BA finish; Casters: 75 φ nylon urethane car; Steel hardware (2, fixed) Assembly required. Please note that we cannot deliver on Sundays and holidays. ● Comes with direct manufacturer shipping, and payment will only be accepted. Please be aware that payment cannot be specified on delivery or time zone. ● Please be aware that delivery to remote islands and Okinawa will be an estimated separately.