A great way to secure your fancy stone to your project! Simply place your fancy stone in the top and secure it with the 4 prongs, then you can sew through the holes on the back to securely attach your stone to your project. Now you can have the sparkle and dazzle of the beautiful fancy items on your horse tack, belts, handbags, hats, etc..... This set holds Swarovski 4706. Also works great to secure the stones and create jewelry!