(1)Special designed for ST/PC connector polish (2)12 connectors can be polished at same time. (3)Parts are changeable on each holding plate, it is cost effective. (4)Signifiacant number marked on each plate,it is easy to be identified by operator. (5)Both left-hand and right-hand handles are provided to suit operation need. (6)The water inlet design comply with the water outlet of polish machine,it is easy to expel the dirts out during operation.