Standard features include an all-steel body, full cycle ratchet, and precision dies. Universal Model 1330's die has three hex cavities (.151, .178 and .215) to crimp ferrules on most SMA or SFR-type fiber optic connectors. The Model 1331 is specially designed for factory specified, secure crimping of AMP Optimate™ SMA and SFR-style connectors. Features a triple cavity die for all fiber sizes.