Hollow Chop Pliers Hollow Chop Contouring Pliers are specialized orthodontic pliers used for subtle and precise shaping of archwires, particularly useful in finishing and detailing stages of treatment. It is used to create subtle curvatures on square as well as rounded arch wires, without scoring or torquing. Product Details Compatible with archwires up to .030″ (0.76 mm) Similar to the 840-48 but with a reduced radius. Handcrafted by the finest grade surgical stainless steel. Corrosion resistance and completely sterilisable.