The Quick Click system is made from strong, durable plastic & is easy to install & remove, as the name suggests. It also comes with an air-relief valve, so that you can control air flow & reduce any vacuuming effect on your tools, stopping them from sticking & swirling on certain surfaces. These dust port adaptors are also built to last, constructed from durable plastics & with a larger inner bore diameter than standard, it will keep your air clearer for longer with a reduced risk of clogging. Connect your tools & your extractors with complete confidence, keeping you safe & working without worry.