12" Flip Back Removable Desk Arm. Viper weighs less than 43 lbs. (Excluding front rigging). New state-of-the-art hydraulic reclining mechanism. Wrap-around arms reduce overall frame width without affecting seat width. Carbon Steel frame with double coated chrome for an attractive, chip-proof, maintainable finish. Durable, heavy gauge flame retardant nylon upholstery resists mildew and bacteria. Nylon, padded armrests provide added patient comfort. Flip-back arms allow for easy transfer. Composite Mag-style wheels are lightweight and maintenance free. Precision sealed wheel bearings in front and rear ensure long lasting performance and reliability. Standard dual axle provides easy transition of seat. Composite footplates are durable and lightweight. Front caster forks are adjustable in three positions. Urethane rear tires and casters offer superior performance, smoother ride and are lightweight. Comes with push to lock wheel locks. Comes standard with "flip-up" anti-tippers with wheels.