The embodiments described and claimed herein relate to a locking assembly including a locking member adapted to set a maximum drilling depth for a drill bit, wherein the drill bit is adapted to extend through a drill bit guide. In one embodiment, the locking member includes a housing and a first inner sleeve, wherein the first inner sleeve has a resting unbiased position with respect to the drill bit guide. The locking member includes a first biasing member having a first end adapted to connect to a portion of the housing, and a second end adapted to connect to a portion of the first inner sleeve, wherein the first inner sleeve is resiliently rotatable to a temporary biased position upon rotation of the housing such that the first inner sleeve is adapted to rotate a circumferential distance with respect to the drill bit guide.
