Check the listing for details. Udderly EZ Equine Restraint Training System Stableizer Size Medium. Color: Black, Condition: New. Listed at 80.70 USD. Udderly EZ Stableizer Size: Medium After more than fifty-five years in the horse training, breeding, sales and Equine consulting business I have added a few more little aids that can successfully be used as an aid in the starting of young colts, and helping to break some old bad habits in a safer and more humane manner for both the horse and the handler. I have had the extreme pleasure of instructing the starting process with The Stableizer® on young stock at some of the most successful Thoroughbred and Quarter Horse training operations in the USA and Europe. Including all 9 units of the US Army and Cavalry, and worked with the wild mustangs at the BLM and at the Governors Horse Guards, #1 and #2. We were riding those Mustangs within 1 hour. By invitation from the director we spent one day at the Irish ISPCA and instructed their Investigators, Veterinarians and Farrier on the use of The Stableizer®.