ADT Original Instant GagOften Imitated, Never Duplicated. Designed with ADT Sponsored Rider, Anne Kursinski, this ADT Signature item is a must for your tack trunk. Convert any bit into a Gag and back again with this handy training aid. Simply slip over the crownpiece and run the ring ends through the bit. Reins can be added to the rings or attach your snaffle rein to the gag for a more direct contact. Safe, affordable and all riding styles will benefit in the right hands.