Midland Metal 20631NIC Connector with Nickel Collet, 4 mm Push to Connect x 1/4 in MPT, Brass, Nickel-Plated

Male Adapter with Nickel Collet, Connection Size 1: 4mm, Connection Type 1: Push-to-Connect, Connection Size 2: 1/4-in, Connection Type 2: Male BSPT, Brass, Nickel-Plated, 1/4-19 Thread