Use: The best hold on the firmest ground. 15mm length (excluding threaded section). Tip is quite sharp when new but quickly wears to a slightly more rounded shape - this does not affect the efficiency of the stud in use. SupaStuds are the award-winning patented British studs. A unique combination of design features makes them easier, faster and safer to use than any other stud on the market. Used by many of the top event riders in the country and SupaStuds have become the studs of choice for thousands of competitors at every level across the board in equestrian sport, from driving to polo, showing to showjumping. Features: unique, self-cleaning design enabling them to be screwed in without clearing the thread. Any dirt in the stud hole is forced into the slot in the thread. cleaning as its screwed in A concave base allows space for dirt which allows space for dirt giving on pressure on the horse's foot. Subjected to high-tech hardening process making the whole stud stronger and harder wearing Road studs and travel studs undergo a special treatment to give extra strength Blue-black coating Resistant to rust Note: not self-tapping studs, designed to clean the hole as they screw in, not to re-thread it.