WHEELCHAIR,K4,BASIC,18",RDLA,S/A FOOT--Durable, tig-welded frame with gray powder coat finish. Swing-back arms with easy flip back arm release. Dual axle hemi-height adjustable. Smooth-rolling solid flat-free latex tires. Adjustable-height back; Comfortable nylon upholstery. Arm style: swing back desk length; Leg styles available: detachable footrest and detachable elevating footrest. Seat sizes come in: 16" x 16" (41 cm x 41 cm), 18" x 16" (46 cm x 41 cm) and 20" x 18" (51 cm x 46 cm). 300-lb (136 kg) weight capacity. Optional accessories: O2 Holder (item MDS85181U), Anti-Fold Device (item MDS85196), I.V. Pole (MDS85183), Overhead Anti-Theft Device (item MDS85197A), O2/I.V. Combo (item MDS85190), Anti-Tip Device (item MDS85189WK4), Tinnerman Legrest Locks (item WCA806991). Picture is representative of this wheelchair line; please check specification table on each individual sku for specific product details