Knipex 85 51 250 A Spring Hose Clamp Pliers and Grip Inserts - Knipex 85 51 250 AF, These spring hose clamp pliers from Knipex are for clamps and spring band clamps of different sizes up to 70mm. Manufactured to a high standard using chrome vanadium electric steel (forged, oil-hardened), the pliers adapt to all positions owing to the rotatable grip inserts. Other features include the good leverage which allows clamps to be opened easily without great effort, the quick-set adjustment (adjusts by shifting directly onto the workpiece) and slim head design (ideal in confined areas). Knipex 85 51 250 AF Spring Hose Clamp Pliers With Locking Device 250mm