Knipex Cobra Water Pump Pliers
By: jarkman DrewKnipex Cobra XS 87-00-100 water pump pliers - a tiny but effective pipe wrench
A favourite in the EDC community, at only 62g and 100mm long, these open up to a maximum of 28mm gripping. They are capable of a lot more than their tiny size would suggest.
Knipex Cobra 87-01-125 high tech water pump pliers
Just 85g and 125mm long, the slightly larger pliers wrench add push button, red non-slip longer handles and up to 30mm gripping capacity.

Both are incredibly well made from a high quality steel. We're fans of both and we all have one of them in our tool kits.