Our business offers both single-mode and multimode ST connectors with either a stainless steel or ceramic ferrule. These ST connectors are bayonet style, spring-loaded connectors with a 2.5mm ferrule. ST connectors were originally designed for telecommunications applications, however, because of its versatility, the ST is also being used in medical, sensing, and industrial applications. Berkshire Photonics offers ST connectors with hole sizes ranging from 125µm to 1100µm with additional hole sizes and materials available upon request. ST connectors available for purchase online are listed below. However, if you do not see what you need, please send us a quote request or call us at 860-868-0081.