The crimping tool contains a die set to precisely affix our low-cost SMA and ST fiber connectors to industry-standard 1.0 mm core/cladding diameter with 2.2 mm OD jacket. Die set contains five crimp cavities: 0.052 (1.32 mm), 0.068 (1.73 mm), 0.100 (2.54 mm), 0.213 (5.41 mm), 0.255 (6.48 mm). The .100 hex cavity is used for our SMA (51 0053) and ST (51 0067) connectors.