|Canada Metal zincs are composed of an alloy that meets Mil-Spec MIL-A-18001 for sacrificial anodes. This alloy is mostly zinc, but with measurable concentrations of cadmium (~0.1%) and aluminum (~0.25%). |
The additional cadmium causes the anode to erode from the surface inward, which causes a ''sandblasted'' appearance to the surface. When the anode is almost dissolved, it needs to be replaced.
Canada Metal uses a special steel combination fastener that makes it possible to use their Balldriver, which is a hex driver with a universal ball tip, to make easy adjustments. This is especially important to divers, who may have a difficult time with conventional fasteners underwater.
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