Interesting facts about GEKA® The original - GEKA® plus quick coupling 10 mm inner diameter for minimum hose size 3/8" 38 mm inner diameter for maximum hose size 1½" 100% compatible The uniform claw distance of 40 mm is a convincing functional feature that has not been changed since the invention of our quick coupling. For users this means: All products of the product range can be combined with each other and for a multitude of applications! GEKA® products are always compatible with one another GEKA® - the safe connection! 10 GEKA® Main Catalogue