The hard drive mounting frame / HDD caddy from CoreParts, model MUXMS-00368, is designed to hold and secure standard 3.5" hard drives in computer or server slots. Made primarily of metal, it features a plastic locking/mechanism for easy insertion and removal. It provides mechanical support and standard fitting for HDDs. Only the caddy is sold, without a hard drive. Its standard compact dimensions and lightweight construction make it suitable for rackmount cages and desktop enclosures that accept removable drives.