Zagall offers this 2.5″ Hard Drive Mounting Bracket for 3.5″ Drive Bays / Enclosures 2-Pack for $4.49. Even better, a second pack is automatically added in-cart for free. With around $2 for shipping, that’s $3 per set and $9 under the lowest total price we could find for this quantity of a similar bracket elsewhere. Each set includes a pair of 3-5/8″ mounting strips and eight screws.