Thomas & Betts makes the 15517 connector die for use with the TBM-14M hydraulic crimp tool. Made for 350 KCMIL (MCM) flex lugs and splices, it is die coded 80 for easy identification. When being used with the TBM-15I tool, the 272X121 die adapter is required. This No.80 die is for use on size 350 MCM flex wire. Model 15515-CK requires the optional 15500-TB adapter for use with the TBM15 tool. No adapter required for TBM14 tools.