The server selection manual with thedown box is downloaded. Germany's boserl production has four series ofreducing machines, namely, r series and axle slash-reducing motors, f series parallel axle slash-reducing motors, k series and k series slash-reducing gear gears, and s series s series slash-retard snails. below is the k-series spiral-pattern gearGeared motorSamples of electric appliances, if selected in three other series, are available on the web site. Thank you for reading this article