Heat shrink tubing : Black Heater size: 95x80mm Voltage: 12VWith ON/OFF switch Keep your hands warm in cold weather riding. Fits for all 12V motorcycle, E-bike and other vehicles. Easy to install and operate. Just need to wire this in to a positive wire from your ignition. With all necessary bits and pieces to install these under your current handgrips. If the bike doesn't have a battery,just need to locate the DC regulator.Installation instructions: 1.Place the heat plate on the right position 2.Wrap the heat plate around to the handlebars evenly,especially at the junction with the heating plate. 3.Put on the jacket tube and adjust the position,using a hot-air gun blowing outer sleeve shrinkage uniformity. 4.Mount the switch in the rod of the rear view mirror. 5.Connect the power line.Line Red and Line Black are not divided into positive and negative,but must installed  in the line control by the ignition key. Package Included: 2 x heated grip pads 1 x heat resistant tape 2 x heat resistant covers