EQI Stainless Steel Pelham Bit with Copper Lozenge Center - 5" Mouth 14mm Thickness. The Bit Cheeks are most helpful with turning aids especially with young horses. The gentle pressure against the face on the outside of the turn supports the rider‘s aid making turns much easier for the horse to understand and for the rider to carry out. This bit lies quietly in the horse's mouth as the cheeks prevent the bit from being pulled through and therefore avoids inconvenient pressure on the back teeth. The mouthpiece remains in the correct central position of the tongue ensuring the rein aids work perfectly in the horse's mouth