PEEK one-piece hex-head fittings are easy to use with the ValvTool or with the Color-It color-coded fingertight adapters. The 10-32 thread will fit virtually all standard high-pressure female connections and are fingertight up to 350 bar (5,000 psi). These biocompatible fittings are available in short and long versions. Made in one piece (no ferrule required), they offer excellent chemical and mechanical properties.