Abstract: A kit of parts for releasably coupling and securing a tubular element to a connector fitting is disclosed, along with related methods. The kit includes the tubular element, a first clamping ring configured to attach to the tubular element, a second clamping ring, and a latch pivotably attached to the second clamping ring at a pivot axis. A tip of the latch includes a barbed hook extending radially inward in relation to the second clamping ring with the barb extending axially towards the second clamping ring such that an undercut is shaped between an axially extending body section of the latch and the barb. The first clamping ring includes a groove adapted and configured to receive the barb, where a rim shaped between the at least one groove and a radial outer circumference of the first clamping ring is sized and configured to be received within the undercut.