This metal drive adapter brackets allow 3.5 inch hard drives to be mounted in standard 5.25 inch drive bays. It works with IDE, SCSI, or SCA drives and includes screws to mount the drive. - A pair of 3 5/8 inches mounting strips with screws. - This drive bay mounting bracket kit let your 3.5 " drives completely fitted into a 5.25 " drive bay. - Maximize the internal space of your computer case for efficient usage. - Eight (8) screws included for mounting the bracket into the PC case - Die Cast 1.00 mm metal strips with anti-rust treatment. - Universal Mounting screw holes for variety computer cases, rack mounted PC