Happy Mouth Roller Centre Hanging Cheek Snaffle. The Happy Mouth Bits are made from hi-tech plastic moulded around a stainless steel centre for added durability and feature an apple scent to help encourage acceptance of the bit, mouthing and help to improve performance. The Happy Mouth Bits are warmer to the touch than traditional stainless steel bits making it ideal for younger horses or horses with a sensitive mouth. The Happy Mouth Hanging Cheek Snaffle is a double jointed bit that works on the tongue and the bars of the mouth. Read more… The Hanging Cheeks exert a small amount of poll pressure making it easier for the rider to ask the horse for flexion and softness at the poll. Happy Mouth Roller Centre offers a oval roller lozenge instead of a usual jointed bit, this lozenge is ideal for horses who do not accept the nut cracker action of a traditional jointed bit and offers them something to play with, helping to encourage mouthing and salivation resulting in a horse with a soft and relaxed mouth.