REMA patches vulcanize without heat. Just clean injured area with pre-buff, then apply cold vulcanizing cement and apply the unit. This radial repair unit is designed to handle the high flex forces of radial tires. Use REMA Special BL Super Cement. To make the job easier, we offer a free REMA repair manual which covers step-by-step illustrations. Made in West Germany. NOTE: Store patches at room temperature away from sunlight.