Mobile retaining apparatus for hand tools (22), such as motor-driven shears which are suitable for cutting rows of trees, shrubs and bushes. The retaining apparatus comprises an L-shaped or T-shaped carrier (10) having a fixable retaining head (20) for the tool (22) as well as a mobile carriage (30) on rollers (40) and stop wheels (50), spacers (51) or guide elements (53), on which carriage the carrier is arranged.