Specifications: Headset Slot Diameter: 1 3/4"" (4.5 cm)- Overall Dimension(LxWxH): 30 5/16" x 16 9/16" x 33 11/16" (77 x 42 x 85.5 cm)- Weight Capacity: 300 Lbs (136 kg)- Fits People Height Range: 4'6" to 6'6" (137.16 to 198.12 cm)- Knee Pad Size(LxWxH): 13 3/4" x 6 11/16" x 2 3/8" (35 x 17 x 6 cm)- Knee Pad Adjusted Height Range: 17 11/16" to 22 7/16" (45 to 57 cm)- Handlebar Adjusted Height Range: 33 11/16" to 44 9/16" (85.5 to 105.5 cm)- Basket Size(LxWxH): 10 5/8" x 7 7/8" x 9 7/16" (27 x 20 x 24 cm)- Wheel Diameter: 7 1/2" (19 cm)- Front Wheel Width: 16 9/16" (42 cm),Rear Wheel Width: 9 1/4" (23.5 cm)- Stopping: Rear on-wheel Brakes- Material: Metal, Plastic, Pvc- Net Weight: 26 Lbs (11.8 kg). Package Contents:- 1x Knee Walker- 1x Basket- 1x Manual. Notice: - Before using, rotate the left handle to loosen the brake from the wheel. - When not using, readjust the left handle to "H" in order to let the brake stick to the wheel and prevent the product from slipping