JP HOBBY ELECTRIC BRAKE SYSTEM WITH 4.0MM SHAFT – 55MM

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. – Customer Can Change The Wheel Diameter By different Tire Skin ( Buy seperately) For Different Plane. – Outside Diameter: 55mm – Thickness: 16mm – Wheel Shaft Diameter: 4.0mm – Weight: 162g ( Whole Unit ) – Input Voltagw: 7.2v – 30v DC