This plier has been specifically designed and manufactured by C4 for the crimping of single or double sleeves in the most commonly used sizes in spearfishing. The holes featured on the head of the plier have diameters: 2.2mm, 3.0mm e 4.0mm.
 
The plier features a hot tempered steel head and metal sheet handles. The closure of the jaws has a minimum tolerance, allowing for a precise crimping of the sleeves on nylon monofilament and other types of lines in the most commonly used diameters.