I have had the same ratchet wrench bought from Lowes for almost five years in salt water. It fits my C2, just barely and it still ratchets and the head still pivots. I give it a fresh water rinse when I get home. During sailing the wrench lives in the tramp bag tethered with a thin line through a hole I drilled in the wrench.
While I will grant you there is some surface rust in spots, the wrench still functions in ratchet and pivot. To be honest when I bought it I thought it would be a consumable replaced once a year or so. I have been suprised.