1. Purpose: Height is adjustable for supporting the working piece on table.
2. Material: S45C, black oxide furnished.

| Order no. | Thread size | Appliable range(mm) | Max. support loading |
| S-70 | Tr14x3 | 56~75 | |
| S-100 | Tr18x4 | 76~105 | 15 tons |
| S-150 | Tr24x5 | 102~160 | 21.5 tons |
| S-250S | Tr32x5 | 142~235 | 46 tons |
| S-250L | Tr32x5 | 160~260 | 46 tons |
| S-300 | Tr32x5 | 200~345 | 46 tons |
| S-400 | Tr32x5 | 300~430 | 46 tons |