Hoodman Raw Steel is a Ruggedized, Steel Plated, SDHC card line designed to withstand the rigors of high performance photography/videography. Hoodman's miniature, chip on board technology, allows extra room for a reinforced internal housing structure that protects sensitive flash components from harm. The Epoxy assembly process adds great strength, while making RAW STEEL waterproof too. Beyond brawn, Raw Steel is also quick...coming in at above speed class 10 specs. For optimum reliability and performance, Raw Steel is ruggedized and tested right here in the USA.