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