This Spears bulkhead tank fitting wrench set is made of PVC and has a body wrench and a nut wrench for manually tightening a bulkhead tank fitting. It is made of polyvinyl chloride (PVC) for corrosion resistance, high strength, and less weight than metal. This bulkhead tank fitting wrench set meets American Society for Testing and Materials International (ASTM) 1785 standards for quality assurance and National Sanitation Foundation International (NSF) certification for potable water service and is suitable for use in high-temperature chemical industrial applications.

Tube fittings are components used for connecting, branching, terminating, and changing the direction of tubing in pneumatic and hydraulic systems. They are made of brass, stainless steel, PBT (polybutylene terephthalate), and other materials that resist corrosion and wear. Tube fittings have various types of connections, including threaded, welded, barbed, and push-to-connect (also called one-touch). Push-to-connect connections do not require tools or sealants. Tube fittings are used in various applications, including machine tools, airplane and truck controls, and automated production lines, among others.

Spears Manufacturing produces thermoplastic fittings and valves for fluid, drain, waste, and vent systems. The company, founded in 1969 and headquartered in Sylmar, CA, meets International Organization for Standardization (ISO) standard 9001.