| 摘要 |
The pliers have, in their front part, a matrix (16) in the form of a letter "U" and a punch (21) of complementary form to the internal wall of the matrix (16). The matrix and the punch are joined respectively to the movable arms (11,12) that are themselves joined together. The cutting edge of the punch may be in the form of a letter "V". The cutting edge (24) of the punch and the cutting edge (25) of the matrix may be chamfered.
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