Abstract: An apparatus for removing and replacing spikes, or calks, in golf shoes. This apparatus may be fitted into a driver for powered operation or may have a handle for manual operation. The pins of the apparatus which engage the spike wrench receptacles in the collar of a spike are "mobile" with respect to the spike holder, so that the spike wrench receptacles in the collar of a spike can be more readily engaged, facilitating removal and replacement of spikes on golf shoes. The apparatus comprises a spike holder, a pair of pins, a hex bit, and a collar nut. Preferably, each of these elements is of unitary construction.