Wheelchair Sentra Heavy Duty Extra Wide 30 Dynamometers Accessories Automatic Power to Detect 16 7136 Automatic Power to Detect Standard Size * Seat has a self adjusting elastic webbing suspension system that won t flatten or bottom out * 3 positions Weight Capacity * Carbon steel frame with TRIPLE coated chrome for an attractive chip proof maintainable finish * Reinforced steel gussets at all weight bearing points provide additional strength * Durable reinforced nylon upholstery * Extra large padded armrests provide comfort and support * Steel spoke wheels are strong and maintenance free * Precision sealed wheel bearings in front and rear ensure long lasting performance and reliability * Extra large heavy duty aluminum footplates provide maximum support are attractive and crack proof * Heavy duty flat free 8 front casters are adjustable in 3 positions * Extra heavy duty front forks * Reinforced side frame caster journals and dual cross bars * Comes with push to lock wheel locks * Limited Lifetime Warranty *