Did you mean 5.25". Usually they are for DVD drives and the like. I found the following 2.5 and 3.5 " enclosures...
MEMTEQ(R) 2.5 inch Hard Drive Enclosure SATA USB3.0 HDD External Enclosure Case 118*73*10mm Compatible Windows 2000 / Windows Me / Windows 98 / XP / Vista / 7 / 8 and Mac OS 9.1 / 10.8.4 above (Blue)
https://www.amazon.co.uk/dp/B00TGU0N..._jrcvwbQZFXRSV
Cheapest I could find, but there are others.
This for 3.5"
CiT 3.5 inch USB 3.0 SATA Aluminium HDD Enclosure - Black
https://www.amazon.co.uk/dp/B00JKW3C..._XtcvwbP3J2Q8Y