Flask Round Bottom, Four Neck, "GWL", Center Neck and three Angled side Neck with Inter changeable Joints.
| Cat. No. | Capacity ml. | Center Socket | Side Socket |
| GWL570/1 | 100 | 24/29 | 14/23 |
| GWL570/2 | 100 | 24/29 | 19/26 |
| GWL570/3 | 250 | 24/29 | 14/23 |
| GWL570/4 | 250 | 24/29 | 19/26 |
| GWL570/5 | 500 | 24/29 | 14/23 |
| GWL570/6 | 500 | 24/29 | 19/26 |
| GWL570/7 | 500 | 24/29 | 24/29 |
| GWL570/8 | 500 | 34/35 | 24/29 |
| GWL570/9 | 1000 | 24/29 | 14/23 |
| GWL570/10 | 1000 | 24/29 | 19/26 |
| GWL570/11 | 1000 | 24/29 | 24/29 |
| GWL570/12 | 2000 | 24/29 | 14/23 |
| GWL570/13 | 2000 | 24/29 | 19/26 |
| GWL570/14 | 2000 | 34/35 | 19/26 |
| GWL570/15 | 2000 | 34/35 | 24/29 |
| GWL570/16 | 3000 | 34/35 | 19/26 |
| GWL570/17 | 3000 | 34/35 | 24/29 |
| GWL570/18 | 5000 | 34/35 | 19/26 |
| GWL570/19 | 5000 | 34/35 | 24/29 |
| GWL570/20 | 10000 | 55/44 | 24/29 |
| GWL570/21 | 20000 | 55/44 | 24/29 |
