Specifications Material: Carbon Steel, Rubber, Sponge, PC, Aluminum Alloy, PU Color: Black, Green Style: Modern Surface Treatment: Argon Arc Welding, Paint Baking Braking: Caliper Braking(Front), Holding Braking(Rear) Assembly Required: Yes Number of Items: 1 Number of Speeds: 7 Applicable Height: 1.3-1.5m/4.26-4.9ft Maximum Bearing Capacity: 85kg/187lbs Wheel Size: 51cm/20in Seat Adjustment Height: 63-76cm/24.8-30in Armrest Distance: 58cm/22.8in Kettle Length: 19cm/7.5in Kettle Holder Diameter: 7cm/2.75in Gross Weight: 12.65kg/27.88lbs Net Weight: 10.6kg/23.36lbs Product Size: 135*85cm/53*33.5in Package Size: 108*21*52cm/42.5*8.26*20.5in.