Pst-100X Respirator Hose Tube Pipe Assembly Universal 40Mm Thread, 1Pcs SUPERIOR AIR SUPPLY - Our respirator hose provides unhindered air supply even when bent or folded. With its long and flexible design (0.5m length), it ensures convenient and reliable breathing support. UNIVERSAL COMPATIBILITY - The respirator hose features a universal 40mm threaded interface design, allowing it to fit most respirator. Its tight and secure connection maintains a high degree of air tightness between the respirator and canister. DURABILITY AND SAFE MATERIAL - Made from durability rubber and featuring an expansion wave pattern with woven fabric, this hose guarantees excellent scalability and pressure resistance. It serves as a reliable gas channel connected to various types of respirators. ENHANCED MOBILITY - The respirator hose boasts flexibility and easy connection to any 40mm sealed NAT0 standard filter. It enables users to move freely while ensuring their breathing air remains purified and without the risk of exposure to nucIear, bioioglcaI, or chemlcai agents. VERSATILE AND EXPANDABLE - Measuring 20 inches in length, the respirator hose can be connected with multiple hoses to create a longer air purification system. It perfectly pairs with various respirator, such as the american adult respirator with filter, providing a secure fit, superior comfort, and low breathing resistance.