Hart Hat Clips are the ideal hard hat accessory for most full brim hard hats. Intended to secure a utility band to a full brim hard hat. Now with the option of including a permanent marker holder! Many different construction trades wear bands on their hard hats to attach needed utility accessories. These hard hat clips provide the needed convenience of a stable band installation on full brim hard hats. The hard hat clip installation is very simple, just hook the clip to the edge of the helmet, then slide the band into the clip groove to effectively fix the headlight. Five pieces included. Four regular hard hat clips, with two sizes for front and back. And one hard hat clip with a perfect insert for your favorite permanent marker.