10pcs PG7-PG63 Corrugated Pipe Joint Black Plastic Tube Connector AD10 AD13 AD15.8 AD18.5 AD21.2 AD25 AD28.5 Bellows Joint
https://www.vogueparade.com/shopping/EN/200282142/1/1005003140431874/10pcs-pg7-pg63-corrugated-pipe-joint-black-plastic-tube-connector-ad10-ad13-ad158-ad185-ad212-ad25-ad285-bellows-joint//