Two turned sleeves in a satin silver metal finish, one small and one large, each with a stepped, grooved outer profile and a toothed ring inside the bore. These connector parts are precision components engineered to link systems, compatible with small, medium and manifold assemblies. The larger sleeve has a wide flanged rim at its open end, while the smaller one tapers through a series of circumferential grooves. Each part is manufactured to meet exact tolerances and material specifications for reliable performance.