The A-Mac Smooth pitching horseshoe has all the same features as the original A-Mac except the ringer breaker has been removed. A feature the flip style pitchers should appreciate. It is NHPA Sanctioned and legal for play in tournaments and leagues. The A-Mac & A-Mac Smooth horseshoes are the World's first and only ergonomic pitching horseshoes. No other horseshoe looks like them. No other horseshoe feels like them and above all No other horseshoe performs like them. The body of the A-Mac & A-Mac Smooth is tilted to scientifically designed angles which help distribute the weight of the horseshoe more evenly over the fingers and thumb.