outer lip 68 having a diameter slightly greater than the diameter of the one way annular lock ribs 53 extending the length of the female connector tubes 46 but not being deflectable during insertion of the male connector pins through the opening 47 in the female connector tube after insertion of the male connector pins ribs 53 and lips 68 interact to prevent removal of the connector pins 66 from the female connector tubes 46 additionally clamping face 64 also includes four oval clamping dimples 70 which are of identical size and shape to that of dimples 54 of the female connector the dimples 70 are positioned to face the flat surface 48 of the female connector component 26 and are not in alignment with the dimples 54 of the female connector component when the female and male connector components are connected together in a manner to be discussed the rigid anvil core tube 24 of the inflatable anvil assembly 23 has axial bore 73 which communicates with a plurality of radial bores 92 formed in core tube 24 a ring seal 76 is provided between the end of the elongated hollow tube 12 and a shoulder 78 on the outer surface of tube 24 as best shown in fig1 for example an inflatable anvil bladder 80 encircles the tube 24 and has a base end 82 positioned in a recessed seat 84 provided in the outer surface of the core tube 24 with a clamp band 86 clamping the base in 82 in a pressure resistant.