Crown Spring Jack, Made of Brass and CuZn36Pb3 Materials, Available in Various Mating Pin Diameters UL, RoHS, ISO9001 ... compliant Crown Spring Jack, Made of Brass and CuZn36Pb3 Materials,Available in Various Mating Pin DiametersMaterial quality: QBe2.0+ heat ... treatment HV330-390 Plating: G/F, by customers' request Materials: brass and CuZn36Pb3 Available in various sizes Plating: tin-plated ...