Koso North America Heated Clamp-On Sleeve AX1200M0Simple, clamp on heated devices for riders who dont want to commit to changing their grips but still want the comforts offered from heated grips. The Koso X Claws Heated Sleeves feature a universal design, that fits a wide range of handlebar sizes. They can be installed and removed in a matter of seconds and stored away in any bag, when not in use. Both 12 Volt and USB powered models require 10 Watts minimum Available in 12 Volt and USB power source