Crimping Tools - Cembre Ratchet Type Cembre HF Crimpstar Ratchet Crimping Tool Crimping Application - Open Barrel Brass Terminals Cembre Crimping Tool HF1 0.5sqmm to 4sqmm conductors Cembre Crimping Tool HF2 0.08sqmm to 1.3sqmm conductors (28-16 AWG) The Cembre Crimpstar range of ratchet controlled crimping tools are compact, lightweight and easy to use.