... 12mm length 20-50mm Or as biofuel,fertilizer First ,thanks for you are interested in our pellet machine .If my trademanager ... of the machine: It is used to produce pellet feed for pig, cattle, sheep, rabbit, chicken, duck, fish,etc; or make ... and heat value, easy burn ,low cost ,convenient use.2.for animal feed :(diameter 2.5 -6mm,or bigger)