Soldering sleeve with soldering flare Housing: Bronze, Gold-Plated Housing Material: Bronze (CuSn) / Gold-Plated Piston: Steel or CuBe (with end digit C) Pitch: 1.27 mm Series: PTR 1008 Sleeve: Bronze, Gold-Plated Spring: Spring Steel, Gold-Plated Overall length: 40.6 mm Working stroke: 4.3 mm