Disc tumbler cylinder lock and key combination

A disc tumbler cylinder lock and key combination, wherein the disc tumbler cylinder lock comprises rotation limiting means for the key and a guiding element and the key comprises grooves for the guiding element, wherein the guiding element comprises two rails which form a part of said rotation limiting means, and both of said rails have at least one limiter protrusion, the limiter protrusions being arranged to facing inward in the disc tumbler cylinder lock, and the key comprises at least one recess for the limiter protrusions,

• and which rotation limiting means further comprise a front guide, the front guide being in connection with the rails, the front guide and the rails being arranged to allow the key, which is in a basic position in the disc tumbler cylinder lock, to be turned for releasing the locking of the disc tumbler cylinder lock in such a way that the limiter protrusions-PO of both rails move, upon turning the key, into said at least one recess of the key.