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333 Posts
Colors are to differentiate between sizes.
The 4 sided wrench has 4 contact sides for the nipple instead of 3 so it has better grip but it obviously makes it slower to use as you must insert "from above" instead of "from the side"
The 4 sided wrench has 4 contact sides for the nipple instead of 3 so it has better grip but it obviously makes it slower to use as you must insert "from above" instead of "from the side"
