1,Use for Laser priner toner cartridges. 2,High quality 3,Can processed to conductivity 4,Tube , Foam or Dual components 1,Use for Laser priner toner cartridges.2,High quality.3,Can processed to conductivity4,Tube , Foam or Dual components wit5,widely used in printers, duplicators industrywelcome all to talk more details laser printer absorbent sponge