Feature:1. Function: When you do not want to use the wheelchair, or need to move the wheelchair outside, and storage wheelchair, convenient to fold the wheelchair.2. Simple Installation: This wheelchair backrest folding switch is simple to use and easy to install. Just disassemble the back joint of the wheelchair and screw this folder onto the tube of the wheel chair.3. Suitable Wheelchair Type: The outer diameter of this backrest folding switch plug is 0.69 to 0.7in, suitable for most electric wheelchair replacements.4. Space Saving: The wheelchair can be folded up, occupying less space, saving and efficient use of space. And folding wheelchair makes safer to carry around.5. Stainless Steel Material: Made of stainless steel, which is good corrosion resistance, heat and high temperature resistance, has stable properties. Even after a long time use will not rust.Specification:Item Type: Backrest Folding SwitchMaterial: Stainless SteelPlug Outer Diameter: (Approx.) 17.5 to17.8mm or 0.69 to 0.7in (Suitable for standard GB wheelchair tube diameter standard).Package List:2 x Backrest Folding Switch