One-hand system crimping pliers Lever-operated crimping pliers with ratchet mechanism and pressure point release with a variety of interchangeable press profile inserts fixed by two fastening screws. The ergonomically shaped crimping pliers are easy and handy to use. The integrated automatic ratchet is triggered by the lever effect of the handle. Adjustable forced release guarantees optimal crimping results. All inserts are made of carbon tool steel. Press profile inserts for one-hand crimping pliers for fiber optic connectors with round crimping, e.g. for SC/AMP-SMA/FC/PC connectors (F1), crimping pliers complete with insert, length 230 mm²