English curb bits for added leverage and control. English curb bits for horses and ponies. A curb bit has a solid bar mouthpiece with shanks on either side. A curb chain is used with the bit to maximize effectiveness. Caution should be taken when used by inexperienced riders. We carry English curb bits from brands like Centaur Metalab or Perri's at everyday great prices. All our English curbs bits come with the Equestrian Collections 100% Satisfaction Guarantee.