The problem with ordinary water pump pliers
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Regular pliers have a slot adjustment that often slips back when you apply force. You put pressure on, the pliers jump, your knuckles hit something sharp. Anyone who regularly works with their hands knows this.
Knipex solved this with a push button that lets you quickly set the pliers to any position. Release the button and it locks. It does not slip back. Ever.
German craftsmanship
Knipex is a German family company, founded in 1882, that makes exclusively pliers. That single-minded focus shows in the quality. The steel is harder than most competitors, the pivot pin more precisely manufactured, the jaw teeth more sharply milled.
These are details you do not see in a shop, but that you feel after five years of use when the pliers still grip firmly.
Which size?
The most widely used size for household use is the 87-41 250mm. It fits connections up to 46mm, covering most pipes and connections in a home. The 300mm model is useful for larger connections like heating system fittings.
