Here is a great addition to you training tack line up. In used condition from Be Nice Halters, made for Colorado Saddlery. Is cob/Arab/small horse size, brown/rust, that pulls over the head and is super adjustable (no clip or tie). These halters have metal raised points on the crown to help a horse release to pressure and stop pulling back when tied. This one is in good used condition, shows normal signs of use and a bit of natural patina on the metal. Per Be Nice:

The Be Nice Halter works on the simple principle that when the horse resists, pressure is automatically applied and when the horse begins to co-operate, the pressure is automatically released. Therefore it is not just a restraint, but a very effective training device as well. Work with your horse to build a bond with the Be Nice Halter being used as a simple tool.