B-1
Type name
Diameter of operating pole
Form of transmission shaft
Number of bearings
Weight
Cutter blade mounting
Usable engine displacement
φ24
□5.4
spline 6×10×0.5
spline 7×7×0.75
4
368g
M8 Left Hand Thread Nat
~20cc
B-2
φ25
390g
M10 Left Hand Thread Nat
B-3
490g
B-4
φ26
393g
B-5
spline 8×9×0.75
3
350g
~30cc
B-6
450g
B-7
φ28
5
900g
~40cc
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