BlastOne Heavy Wall blast-hose is manufactured from virgin rubber for extended life. Carbon black is added for optimum static dissipation. With a high quality hose, life is 400 to 500 hours. BlastOne Heavy Wall is manufactured to our specifications to give you longevity. BlastOne Heavy Wall blast-hose is used as extension hose when blast-hose length is greater than 20 metres. As a rule-of-thumb, use a blast hose that has an ID minimum of 3 times larger than the nozzle size.