Ribbed buoys
| Product number | Type | Buoyancy kg | Diameter mm | Height (mm) | Hole mm | Weight (kg) |
| 20173 | HL-2 | 30,5 / 7,5 | 300 | 620 | 22 | 2,1 |
| 20175 | HL-3 | 51 / 30,5 | 350 | 745 | 25 | 3,1 |
| 34605 | HL-4 | 80 / 48 | 400 | 950 | 28 | 5,9 |
| Product number | Type | Buoyancy kg | Diameter mm | Height (mm) | Hole mm | Weight (kg) |
| 20173 | HL-2 | 30,5 / 7,5 | 300 | 620 | 22 | 2,1 |
| 20175 | HL-3 | 51 / 30,5 | 350 | 745 | 25 | 3,1 |
| 34605 | HL-4 | 80 / 48 | 400 | 950 | 28 | 5,9 |
