SFM
Usage & Applications
Japanese fencing school, gymnasium. Other used a multi-purpose
It is made of coil spring and has a good efficiency when loaded. It can move up and down.
| Usage | Spring constant(kg/mm) | Max W(kg) | Note | 
|---|---|---|---|
| judo place | 8 | 320 | Made to Order | 
| Japanese fencing school | 18.5 | 400 | Made to Order | 
| gymnasium | 10 | 200 | Made to Order |