The Hacker B20 series are available in both
short (S) and long (L) and both models are
available with an optional Maxon high quality
planetary gearbox (G). The gear ratio of the
gearbox is 4:1.
The short (S) series (both geared and non-
geared) are available with the following winds:
18, 22, 26, 31, 36 and 41.
Please ensure you enter the wind you need in
the comments box when you enter your payment
details.
The full technical spec for the B20 series can be
downloaded by clicking on the pdf link.