Heavy duty pliers for use on ear type metal CV boot clips (for example Oetiker ear clamps). The jaws crimping action prevents damage and correctly tensions the clip. When the jaws open the forming plate pushes up to press a flat on top of the clip for secure fastening. Pliers can be used by hand or with the assistance of a power bar when greater tension is required. A versatile set of pliers, also useful for attaching clamps found on certain fuel filters, water pumps and cooling system hoses.