All Hosco Fittings are smooth-bore, cavity-free, silicone-free, and micro finished to pave the way for dirt-free paint. Hosco offers several sizes and connection types for the paint industry like NPS, BSP, NPT, BSPT, Bulkheads, Tube Compressions, Tube Stubs. Hosco offers paint grade Teflon, Nylon and Coaxial tubing in many commom finish line sizes.