Our own design. All stainless & heavy duty. 6 marker styles to choose from. Markers can be engraved with up to 3 lines. This spring loaded divot tool opens at the press of a button and stays locked untill you press again and manually close. One advantage of this divot tool is that it can hold a variety of markers as there is no recess in handle. See photo 3 for a profile view. Ready to ship overnight. Use your imagination!