Carbon steel frame. Chrome plated finish. Dual rear axle converts to hemi. Mid position slide post adds strength and allows easy folding. Double embossed vinyl upholstery with heavy duty inner liner is flame retardant and mildew resistant. Dual precision sealed maintenance free bearings. 24” Composite mag wheels with urethane tires. 8” Front castors with solid rubber tires. Composite hand rims. Padded armrests and leg rest panels.