LC quad coupling made of plastic, SC duplex design with metal clip, slotted ceramic guide sleeves for single-mode and multi-mode applications, with transparent dust protection caps for better visibility during red light testing, high material stability, surface quality and service life, service life min. 1000 mating cycles with ceramic guide sleeve, screws and nuts included in delivery, variants: blue (OS2), green (OS2 APC), lime green (OM5), violet (OM4), aqua (OM3), each individually packed or in packs of 30