Features Companion activated loop wheel locks Reinforced double cross-braces for extra strength and weight capacity Detachable full armrests,optional desk armrests Detachable swing away footrests with large aluminum footrests,optional elevating legrests. Nylon seat and back upholsteries 200 x 50 PU tyred casters with heavy-duty forks and 1" stem 12 - 1/2" x 2 - 1/4" PU tyred molded Mag. wheels with strong M15 axle Limited lifetime warranty on frame