The Keysight 11901B is a 2.4 mm female to 3.5 mm female, metrology-grade adapter with dc to 26.5 GHz operation.

• Connector Type: 2.4mm female to 3.5 mm female
• Frequency Range: dc to 26.5 GHz
• Return Loss: >32 dB
• Repeatability: -54 dB
• Electrical Length: 16.1 mm (0.63 in)
• Overall Length: 21.1 mm (0.83 in)
• Diameter: 8.0 mm (0.31 in)