Given that we have extended the range of straps for fastening the argon cylinders to cover more different types currently available on the market, we have decided to slightly modify the product names to avoid misunderstandings. The product name now includes a number, which is a diameter of recommended cylinder and also the way of attaching it to your system. More details are on each product page in section “HARNESS & STRAPS” on eshop.daretodive.eu