A modular tool apparatus is provided having a handle defining a cannula extending at least partially therethrough and an elastic member disposed therein. The apparatus further provides a separate tool shaft configured to be releasably engaged with the handle by insertion into the cannula. The tool shaft comprises a plurality of teeth configured for ratcheting engagement with the elastic member when the tool shaft is inserted into the cannula. In some embodiments, the cannula extends completely through the handle from a proximal end to a distal end thereof to facilitate cleaning of the handle and separable tool shaft.