a good bit, though i'd call it a fulmer snaffle not a tom thumb like the label says to avoid confusion with a bit of lesser quality. Very popular here in australia for horses working in feedlots and breaking young horses. Essentially the same as any other snaffle but the cheekpieces stop the bit pulling through the horses mouth. Just like anything else, it's just as harsh as the person using it. Not sure why the cheek pieces are flat, but that wouldnt do much other than make it a little more severe.