JP HOBBY ELECTRIC BRAKE SYSTEM WITH 4.0MM SHAFT – 45MM

Manual Video Spare Parts – Complete Control By Electricity, No More Trouble of Air Leaking From Air Brake. – Strong CNC Wheel Frame And Inflatable Of Soft Rubber Tire. – Suitable For most 64mm – 70mm EDF Jet In The Market. – Outside Diameter: 45mm – Thickness: 14.5mm – Wheel Shaft Diameter: 4.0mm – Weight: 97g ( Whole Unit ) – Input Voltagw: 7.2v – 30v DC