LS1S-B(J1-B): RANGE:(CU)0.10 MM-0.50 MM (AL)0.10MM-0.50 MM LS2S-A: RANGE:(CU)0.30 MM-0.90 MM (AL)0.30MM-1.00 MM LS2T-A(J2-A): RANGE:(CU)0.30 MM-1.20 MM (AL)0.30 MM-1.40 MM LS3T-A/B/C/D: RANGE:(CU)1.00 MM-3.25 MM (AL)1.00 MM-5.00 MM APPLICATIONS: USED FOR COLD WELDING WIRS TO USED IT AS ONE IT AS ONE PIECE