Premier Equine Sport Brass Alloy Tom Thumb With LozengeWhy choose a Tom Thumb bit for your horse? The Tom Thumb bit is a cross between an American gag and an elevator bit. It offers more precision and control and is very popular for show jumping and cross country. It has a lifting effect in front which can assist the rider in helping to sit the horse back on its hocks, enabling tighter turns and more efficient jumping. The uplifting action combined with poll pressure can also discourage horses from