An apparatus for attaching a tag to an object. The apparatus may include a body. The apparatus may also include an attachment arm, the attachment arm having a locked position and an unlocked position, and the attachment arm lockably closing to form a first closed loop with the body when the attachment arm is in the locked position. The apparatus may also include a tag loop mechanically coupled to the body. The apparatus may also include a detent arm mechanically engaged with the attachment arm in the locked position of the attachment arm, the detent arm configured so that an application of a force to the detent arm simultaneously unlocks the attachment arm and opens the tag loop.