The SIP 1/4" x 1/4" Equal Union Adaptor is a heavy-duty, hard-wearing fitting designed as a secure connection in compressed air systems, including compressors, air hoses and air tools, connecting two pieces with the same diameter together easily.This adaptor is manufactured from heavy-duty zinc-plated steel and high-quality Nitrile sealing, making it perfect for a variety of environments.• Heavy-duty 1/4" x 1/4" equal union adaptor fitting• Designed for connecting to same-sized pieces together• Suitable for a wide range of compressed air equipment• Manufactured from zinc-plated steel with Nitrile sealing• Interchangeable with machinery from other brands