Drop-The-Hammer (DTH). The DTH is super-light to accelerate like no other BMX tyre, yet holds up to the abuse you dish out. The dual-compound tread corners incomparably on hard pack tracks and rolls fast on the straights. Silkworm Technology is an exclusive material incorporated into the casing of select models, increasing puncture and tear resistance. Silkworm is featured under the tread as a breaker (denoted as Silkworm).