precise crafted aluminum frame features hollowed ventilation panel and pre included screws for tool less assembly of stackable storage configuration Metal construction supports repeated drive swaps and multiple layer installations without compromising structural stability Ideal for builders, servers administrators, and technology enthusiasts organized disk / hard drive expansion in small space For 2.5in disk / hard drive bracket with multiple layer stackable and heat dissipating design ensures secure installation and optimaled airflows for 2.5in drive Perfectly integrates into gaming rigs, or work space to maximizes drive capacity while maintaining heat efficiency