A golf club with a new innovative construction to attach a high density weight to an external surface of the sole of a golf club head is disclosed herein. More specifically, the present invention relates to utilizing a thickened sole portion having a specific surface area to thickness ratio to provide adequate support for a high density weight having a significant amount of mass. The new innovative method of attachment also incorporates a unique mechanical lock to properly secure the high density weight to the club head, as materials used for high density weighting may not be easily weldable to the titanium material currently used for metalwood type golf club head. The present invention's mechanical lock mechanism utilizes a protruding extension stemming from an internal surface of the weight and an attachment socked located within an internal cavity of the golf club head to engage one another to help secure the weight to the golf club head.