- fixed tooth for Gyro-Trac forestry mowers
- version with 3 planer carbides
- extremely long life time
- fixed tooth for Gyro-Trac forstry mowers
- overall-improved design
- stronger steel body
- BFS426 equivalent
- fixed tooth for Gyro-Trac forestry mowers
- overall-improved design
- stronger steel body
- version with carbide hard facing
- BFS426-P equivalent
- fixed tooth for Gyro-Trac forestry mowers
- version with razorblade-sharp cutting edge
- most aggressive tooth available
- fixed tooth for Gyro-Trac forestry mowers
- embedded carbide
- more impact-resistant than BFS515