The modular bottle carrying system is suitable for GL 45 threaded laboratory bottles and compatible with 2, 5, 10 and 20 liter bottles. The ergonomic design delivers health and safety benefits for the user and ensures easy and safe transport of bottles in the laboratory or production facility. Transferring liquids from large bottles is more convenient and safer. All materials are fully autoclavable. The collar can only be removed by cutting it off - therefore the attachment is 100% safe to use.