Drip Irrigation Tube Installation: Soak the tube end in hot water for 815 seconds to expand the tube and push it directly into the barb connector. Note: Slide the drip irrigation tube over all barbs. Material: These irrigation tube connectors are made of highquality plastic, antiaging, sturdy and durable. Package: 10 pcs 3/4" NPT male x 1/2" barb connector. Usually it is used in faucet extension hoses to introduce water into your irrigation system. Use: Our 3/4" NPT male x barb connector can perfect your irrigation system and extend to every corner of the garden, universal drip irrigation tube, soaker hose makes your greenhouse, garden, potted plants, lawn, orchard, vegetable garden, keep your plants evergreen in the hot summer. Applicable Tube: 3/4" NPT male. The barb connector is compatible with PE 1/2inch drip irrigation pipe, with an inner diameter of 0.52 inches0.6 inches and a barb outer diameter of 17 mm, which can effectively prevent the pipe from falling off due to excessive water pressure.