A full range of high-strength one-piece PP barbed insert fittings for PE pipe - multi-tier barbs plus a reinforcing ring grip tightly by hand-push alone, with no nuts or clamp rings needed. Fits Φ16/20/25/32 PE pipe and covers couplings, tees, elbows, offtakes, male-thread adapters, reducers, and end plugs - the backbone of any reliable mainline and sub-main irrigation network.