From 3M, a series of no polish fibre optic connectors. These fibre optic connectors are field installable allowing for convenient fast on-site termination of 250 μm and 900 μm connections. The connectors are made up of a factory polished fibre/ ferrule and mechanical splice which is installed with a simple field tool. The SC connectors have bell shaped boots already attached, decreasing the chance of losing or forgetting to terminate during connection. The ST and LC versions have a streamlined version of this boot also minimising the same risk.