A golf swing training device has a main housing including a first section and a second section. First and second faces of the first and second sections, respectively, each may have first and second channels. A hinge connects the first and second sections such that the first channel aligns with the second channel to form a conduit through the main housing. Removable inserts fit within the first and second channels, each removable insert having an insert channel, wherein each insert channel aligns to form a bore sized to receive the shaft of the golf club. A fastener is positioned opposite the hinge for securing the first and second sections of the main housing together around the golf club shaft.