The Schouten 121743 Storz Adapter Coupling NA115-133 is a high-quality, symmetrical quick-release coupling crafted from durable aluminum. This Storz coupling is designed for efficient and secure connection of hoses, making it suitable for a wide range of applications involving water, chemicals, and food products. Featuring a bayonet-style mechanism, it locks firmly with a simple quarter-turn. It adheres to the Storz standard, commonly used in Germany, Austria, and Switzerland. This specific adapter is designated NA115, indicating a nominal diameter of 115mm, and is compatible with hoses having an outer diameter in the range of 115-133mm.