it is part to use on chain saw,garden tools.totally improted meterial and made by advanced equipment from Switzerland,Germany.. saw chain 3/8"LP,.043"1.1mm,100feet3/8"LP,.050"/1.3mm,100feet.325,.058"/1.5mm,100feet.325",.063"/1.6mm,100feet.325",.050"/1.3mm,100feet.325",.058"/1.5mm,100feet.325",.063"/1.6mm,100feet.404:,.063"/1.6mm,100feet