This wrench is adjustable and can be opened to install the deck plate and strainer cover, a single tool can cover the deck plate fixing bolts, strainer cover locking nut, marine fuel tank cover, and other scenarios, avoiding frequent replacement of tools Opens to fit deck and filter covers, locking adjustable wrench, keyhole spacing up to 7 inches, and a hole in the handle for hanging the wrench where the filter is conveniently located The body of the wrench is forged from high hardness chrome vanadium alloy steel with chrome plated or nitrided surface, which provides excellent corrosion resistance to withstand seawater and salt spray erosion and extends the life of the tool, and the handle and key stress areas are heat-treated and reinforced to withstand the impact of wind cannons and frequent high load operations, which is in line with the demanding standards of marine deck maintenance Whether you are a marine maintenance technician, heavy machinery engineer or industrial equipment maintenance team, this wrench can meet your work needs Our professional marine wrench tools can be used in repair scenarios such as tightening and adjusting of fuel tank caps, water tanks, fuel storage tanks and hull structural components The body of the wrench is forged from high hardness chrome vanadium alloy steel with chrome plated or nitrided surface, which provides excellent corrosion resistance to withstand seawater and salt spray erosion and extends the life of the tool, and the handle and key stress areas are heat-treated and reinforced to withstand the impact of wind cannons and frequent high load operations, which is in line with the demanding standards of marine deck maintenance