Handcrafted Race Ready Dual Temp Tire Warmers. No Fade Carbon Wire Technology heats up 25% faster than less efficient copper wire warmers at only 750 watts. Level I / Warm – (maintain) at 60C / 140F. Level II / High – (heat soak) at 85C / 185F. "GP" Thermal Liner disperses heat evenly and keeps heat inside to the rim. *Unlike other tire warmers which use soft copper wiring which becomes brittle when hot and quickly deteriorates, MOTO-D Racing PRO-Series Warmers use Carbon Wiring which can be twisted or crushed without failure. 2-Year No Hassle “Burnout Proof” Warranty included, if they fail due to a manufacturing defect we repair or replace, if they fail because YOU left them on and accidently burnt them out (user negligence), we replace them (once). Zippered EVA Carry Case Included.