Both Drives sit flush and have solid aluminum end-caps match the MacBook's aluminum finish

Nifty is easily removed with a tool the company provides as seen in image. If you loose the tool you can get a new one from Nifty for about 10$

TarDisk is easily removable with a short thumb or finger nail if you don't have nails a credit card or other wallet card can be used.

Both are available online at Nifty and at TarDisk