The Eiszapfen G1/4" M-M Quick Release Coupling Set is the high-end version of the Alphacool product range. It is designed to appeal to enthusiasts and professional users and offer them the best of quality, functionality and design. Thanks to a sophisticated closure and sealing system and the N.D.S.L (no drip, no splash, no leak) technology, the water loss when opening the quick release is minimal. Only a tiny drop of water comes out. The closure is easily loosened by a pull on the connecting ring. The counterpart jumps out of the quick-release fastener independently. To connect, simply put both pieces together. The whole thing is very easy and can be done by any user. Specifications (Set): Dimensions (LxD): 62.5 x 24 mm Material: Brass Thread Length: 5mm Type of Quick Release: Push-In