Features 1、A set of quick release fittings, a perfect starting set or for making new hoses etc. 2、1/4 inch quick coupler connectors, do most of what you need. 3、Compressive strength, high performance and high reliability. 4、Fast and easy to install, you do not need any other tools. 5、Prevent air from escaping when changing between tools. Specification Features: A set of quick release fittings, a perfect starting set or for making new hoses etc. 1/4" quick coupler connectors, do most of what you need. Compressive strength, high performance and high reliability. Fast and easy to install, you do not need any other tools. Prevent air from escaping when changing between tools. Specification: Color: Silver as the picture Material: Iron Weight: approx. 648g Package List: 1/4" Double male adapter * 2 1/4" Japanese male adapter * 1 Japanese 8mm rat tail female adapter * 2 1/4" Japanese female adapter * 2 1/4" Female thread male adapter * 4 Rat tail 8mm adapter * 3 1/4 Male thread male adapter * 4 Package List