Describes something that can be attached and removed, such as parts, accessories, or components. Often used in technical or product descriptions.
This hood is detachable.
Detachable parts are included.
取り外し可能 also means removable/detachable, but 着脱可能 emphasizes the ability to both attach and detach, often used for parts that are frequently mounted and removed.
Compound of 着脱 (attachment and detachment) + 可能 (possible). The word is a straightforward Sino-Japanese formation.