Hunter PLD075 Barb to .75" MPT Aadapter 17 mm . PLD-LOC fittings are made to be compatible with ½” polyethylene tubing and emitterline having an inside diameter range from .520” to .620” (13.3 mm to 15.8 mm). PLD-LOC fittings are made of UV-resistant, glass reinforced polypropylene material for durability and resistance to cracking/breaking. The large threaded swivel connectors assist with making installs easy and leak-proof. Fittings can be disassembled from the tubing and reused. Fittings are brown-colored to blend in more readily with both the landscape and with brown dripline. Operating pressure is from 0 to 60 psi (0 to 4.1 bar, 0 to 413 kPa). Use with Hunter Professional Landscape Dripline (PLD) and Thick Walled Polyethylene (TWPE) products.