The 18 Poly-Fly High Strength Lightweight Wheelchair/Flyweight Transport Chair Combo by Drive Medical can be used as a standard, self propelled wheelchair or as a transport chair, all-in-one for your convenience. The quick release 24 wheels can be easily removed to transition from a wheelchair to a transport chair. Also comes with two sets of aluminum wheel locks, one for use with wheelchair and one for use with transport chair, for added safety. The deluxe back release folds down the backrest for easy and convenient storage and transportation. Comes standard with easy to clean nylon upholstery, swing away footrests, composite crack-proof footplates, heel loops and 8 caster wheels that provide a smooth ride over most surfaces.