For 2 modular jack inserts. Suitable for item no. 0210, 0211 and 0219-101. For systems: AMP / tyco Electronics, Assmann, BTR, EFB, Krone, Panduit, Quante, Radiall, Setec, Dr.-Ing. Sieger, Telena, Thomas & Betts. For Telegärtner AMJ / UMJ connection modules / couplings. For 2 fiber optic modules from the system: 3M-Volition, Krone, mvk. Pitch: (WxH) approx. 14.8 x 19.4 mm. Without spreader. Check compatibility with other manufacturers not listed according to the pitch dimensions given. You can find further information in the communications systems manual or on the Internet.