Compass Health Brands Wheelchair 24 X 18 Dsk Arm, Footrest Brand_Worthy Dog Inspired by the Louisiana Bayou Inspired by the Louisiana Bayou and Creole chefs' age old traditions Adding R 134a refrigerant to replace the leaked refrigerant can be done at home by the average do it yourself mechanic for a fraction of the cost of paying an auto repair shop to perform the procedure The ProBasics K7 Heavy Duty Wheelchair has a robust design to accommodate patients with a wider seat and higher weight capacity The 8" x 2" semi pneumatic casters are adjustable in 3 positions and the dual axle provides easy transition of seat height to hemi level