Polo Gag McHardy Bomber BitPolo Gag McHardy Bomber Bit mouthpiece is a Bomber invention for the tongue sensitive horse and recommended when the happy tongue does not offer enough control; the horse becomes heavy or is behind the bit. The Polo Gag McHardy Bit is a suitable bit for a horse showing classic signs of resisting tongue pressure by shaking its head or sticking its tongue out. With this in mind the McHardy was created, it is a hybrid between the Happy Tongue and Buster