1)Special designed for OFL-12,FC/SC,APC ferrule style connector polishing. 2)12 ferrules can be polished at the same time. 3)Parts are changeable on each ferrule, it is cost effective. 4)Both left-hand and right-hand handles are provided to suit for operation need. 5)it is easy to expel the dirts out during operation. 6)STD & CONE style are provided for ferrule option.