Flask Round Bottom, Four Neck, "GWL", Center Neck and three Parallel side Neck with Inter changeable Joints.
| Cat. No. | Capacity | Center | Side |
| ml. | Socket | Sockets | |
| GWL571/1 | 100 | 24/29 | 14/23 |
| GWL571/2 | 100 | 24/29 | 19/26 |
| GWL571/3 | 250 | 24/29 | 14/23 |
| GWL571/4 | 250 | 24/29 | 19/26 |
| GWL571/5 | 500 | 24/29 | 14/23 |
| GWL571/6 | 500 | 24/29 | 19/26 |
| GWL571/7 | 500 | 24/29 | 24/29 |
| GWL571/8 | 500 | 34/35 | 24/29 |
| GWL571/9 | 1000 | 24/29 | 14/23 |
| GWL571/10 | 1000 | 24/29 | 19/26 |
| GWL571/11 | 1000 | 24/29 | 24/29 |
| GWL571/12 | 2000 | 24/29 | 14/23 |
| GWL571/13 | 2000 | 24/29 | 19/26 |
| GWL571/14 | 2000 | 34/35 | 19/26 |
| GWL571/15 | 2000 | 34/35 | 24/29 |
| GWL571/16 | 3000 | 34/35 | 19/26 |
| GWL571/17 | 3000 | 34/35 | 24/29 |
| GWL571/18 | 5000 | 34/35 | 19/26 |
| GWL571/19 | 5000 | 34/35 | 24/29 |
| GWL571/20 | 10000 | 55/44 | 24/29 |
| GWL571/21 | 20000 | 55/44 | 24/29 |
