SPHD bias tire patches are designed for repairing both flat and non-flat tires. Due to their excellent elasticity and sufficient strength, they are suitable for use on truck and tractor tires. For repairing industrial tires, use stiffer COTR patches. The design of SPHD patches makes them easy to use and allows repairs even close to the tire bead. NB! All damage (cracks, tears, holes) must be filled. For cold vulcanization, use blue "Maxibond Cement" glue.