Calibration Kit 3.5 mm 50Ohm, Female, Open, Short, Match, Through Combination, 0Hz-15GHz, ID # 1317.7677K03 The R&S ZV-Z135 model 03 is a Calibration Kit with connector 3.5 mm 50 Ohm female. Inner conductor material: Au-plated age-hardened CuBe alloy Outer conductor material: CuSnZn-plated Cu alloy Body: blue anodized AI Standard: IEC 60169-23 Dimension (WxHxD): 2.9 x 0.9 x 3.7 in. Weight: approx. 0.5 lb