Check the listing for details. Performance Tool M685 Permanent Hose Coupler Fitting - Compact, Durable Desig.... Condition: New. Listed at 10.99 USD. The Performance Tool M685 Inline Blow Gun is the perfect solution for all your air blow gun requirements. Its easy installation allows it to fit permanently between the hose and coupler, ensuring a quick and hassle-free setup. The natural angle design provides comfort and convenience without awkward hand positions. Its compact size makes it easy to store and transport, and the durable construction guarantees long-lasting performance. With the M685 Inline Blow Gun, you can effortlessly blow out debris without disconnecting hoses or couplers. Additionally, it comes in a convenient 12-piece display, making it easy to stock up for all your air blow gun needs. Enhance your air blow gun experience with the Performance Tool M685 Inline Blow Gun!