If you want to use studs, first, you must get your farrier to drill threaded holes in your horse's shoes. Horseshoe studs have a threaded end which you screw into the shoe, first by hand, and then you tighten them with a stud wrench. You should only use studs for riding - put them on just before you start and remove them as soon as you finish. When you remove the stud, you must fill the stud holes with a stud plug or cotton wool to keep them clean and free of debris.