The STIHL shredder bag AHB 050 collects shredded tree cuttings and green cuttings directly ander the shredder. The self-standing grass catcher box has a capacity of 50L and was developed for tough everyday work. It can be used to carry even larger quantities of shredding material with ease. It is available as an optional accessory for most STIHL garden shredders (with the exception to shredder model GHE 135 L