Knipex hose clamp pliers for click clamps 250mm knipex 85 51 250 c these hose clamp pliers from knipex have been manufactured to a high standard using chrome vanadium electric steel forged oil hardened and are designed to open and close click clamps the rotating jaw inserts allow for the safe actuation of clamps in any position while the good leverage allows clamps to be opened and closed again comfortably and easily without a great deal of efforthttpswwwyoutubecomwatchvoq2lsh