Features 1、SP20 (female) + PP20 (male) is suitable for PU pipe with 8mm outer diameter and PU pipe with inner diameter 5 or 5.5mm. 2、The working pressure is 20KG, the entire surface is chrome-plated, strong and durable, has a long service life. 3、With great workmanship, this connector can perfect replacement for the old one. 4、Convenient to use and with good performance, with small size, easy to carry and store. 5、Can be used with peace of mind, with strict quality control and quality assurance, high safety factor. Specification Item Type: Air Quick Connector Product Material: Carbon steel Outer Ring Treatment: Double grooves without knurling Sealing Ring: NBR bidirectional Working Pressure: Approx. 20 kg / 44.1 lb Surface Treatment: All chrome plated Connection Method: One-handed operation Specification: (SP20+PP20) is a group, 5 groups is a set. Package List 5 Groups Air Quick Connector（SP20+PP20=1 group）