Each drive is large enough for a large OS build or any software installation. I used them for some system updates when I couldn't do broadcast installs. All hard drives work fine and I haven't had any problems with any of them. The case is soft and flexible, holds the discs well. Different colors make it easier to sort the discs.
32GB SanDisk USB Flash Drive (SDCZ430-032G-A46)
78 Review
Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
69 Review
Kingston DataTraveler flash drive 100 G3 256 GB, 1 pc. black
74 Review
Kingston DataTraveler SE9 32GB USB 2.0 Flash Drive for Reliable Data Storage (DTSE9H/32GBZ)
69 Review
2 TB External HDD ADATA DashDrive Durable HD650, USB 3.2 Gen 1, Blue
55 Review
18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review
8TB Seagate Backup Plus Hub Desktop Hard Drive with Data Recovery Services
56 Review
2 TB External HDD Western Digital WD Elements Portable (WDBU), USB 3.0, black
84 Review