A stand for a drilling tool includes a support column with a carriage movably mounted on the column. A carrier member for a drilling tool can be secured to the carriage with support sections on the carrier member in engagement with support surfaces on the carriage. One of these support surfaces is provided by the eccentric circumferential surface on an eccentric peg which is rotatably mounted in the carriage. The support section engageable with the peg has a catch projection which prevents displacement of the carrier member from the carriage when the eccentric surface on the peg is aligned opposite the corresponding support section on the carrier member. The projection extends outwardly from the support section by an amount at least equal to the eccentricity of the circumferential surface of the peg.
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