For your consideration, here is a Pair of Metal Rails for Mounting a Hard Drive 3.5" in 5.25" Diskette Bay, new. Can be used to mount a hard drive in a floppy disk bay. They are new. I bought them but never used them. The length of them is 3 3/4 inches. Item pictured is the actual item up for sale and comes from a non-smoking household. (148.949i-.6ob)