The grooved slick design of the Maxxis DTH (Drop the Hammer) is suited to a variety of BMX, dirt jumping, and pump track situations. Single or dual compound options 60 TPI Silkworm puncture protection beneath tread 26''x2.30, Folding, Clincher, Single, EXO, 60TPI, Tanwall Category: BMX, Dirt Jump, Pump Track, Urban Recommended use: Groomed tracks, pavement/asphalt, skate parks Recommended installation: Front or Rear SILKWORM Silkworm 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.