Hand-held power tool

A hand-held power tool for driving a cutting or grinding working tool (12), comprising a running gear (13) having a support section (14), and a roller (15) rotatably supported on the support section (14) for displacing the power tool;

• and a locking device (20) having a locking position in which the roller (15) is secured to the support section (14) against rotation relative thereto, providing for a stable support of the power tool at a localized spot, and a release position in which the roller (15) is rotatable relative to the support section (14) for displacing the power tool, the locking device (20) having at least one locking element (21a, 21b) provided on one end of the support section (14), and at least one counter-locking element (22a, 22b) provided on one end of the roller (15) and engageable with the at least one locking element (21a, 21b) of the support section (14) in a locking position of the locking device (20) for securing the roller (15) on the support section (14) against rotation relative thereto;
• and an annular groove (25) provided on another end of the roller (15) and engageable with the at least one locking element (21a, 21b) of the support section (14) in the release position of the locking device (20) for enabling rotation of the roller (15) relative to the support section (14).