RoHS stands for Restriction of Hazardous Substances. RoHS, also known as Directive 2002/95/EC, originated in the European Union and restricts the use of specific hazardous materials found in electrical and electronic products (known as EEE). All applicable products in the EU market after July 1, 2006 must pass RoHS compliance. The substances banned under RoHS are lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (CrVI), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), and four different phthalates (DEHP, BBP, BBP, DIBP). RoHS StarTech.com 25SAT35HDD, 3.5", Storage drive tray, Black, Silver, 2.5", Aluminum, Plastic, 12.5 mm StarTech.com 25SAT35HDD. Size (imperial): 3.5", Type: Storage drive tray, Product color: Black, Silver. Width: 4.02" (102 mm), Depth: 5.75" (146 mm), Height: 1.42" (36 mm). Package width: 4.53" (115 mm), Package depth: 6.42" (163 mm), Package height: 1.5" (38 mm). Cables included: SATA. Quantity per master (outer) case: 32 pc(s), Master (outer) case width: 12.3" (313 mm), Master (outer) case length: 13.5" (342 mm)