Know your horse bits – The D-ring Snaffle Bit
D-ring snaffle bits are some of the most popular horses bits for riders of all disciplines. They get their name from the ‘D’ shaped bit rings on either side of the mouthpiece.
D-ring bits are always fixed cheek bits, meaning the cheek pieces, which form the straight side of the ‘D’, are moulded seamlessly to the ends of the mouthpiece. The cheek pieces are then attached to the curved part of the ‘D’ via swivel joints that allow them to move laterally.
This fixed cheek design eliminates the risk of pinching or uncomfortable movement for the horse. It also prevents the mouthpiece from sliding through the horse’s mouth, providing stability, and lateral control.
The Different Types Of D-Ring Snaffle Bits
The mouthpiece of a D-ring snaffle bit can be a mullen mouth, solid-bar or jointed. Which it is will influence how the bit works overall – jointed mouthpieces produce a nutcracker effect and mostly exert pressure on the horse’s lips whilst a solid-bar and mullen mouth exert even pressure across the tongue, lips and bars.
However, as with all snaffle bits, the bridle cheek straps and reins always attach to the bit rings, producing direct contact and pressure on the horse’s mouth.
Single Jointed
This is the most traditional type of D-ring snaffle bit, featuring a single joint in the middle of the mouthpiece. It applies pressure to the tongue and bars of the horse’s mouth when rein aids are applied.
Double Jointed
Also known as a French link D-ring snaffle, this bit has a double-jointed mouthpiece that reduces the pressure on the horse’s tongue and allows for more freedom and comfort.
Dr Bristol
The Dr Bristol D-ring snaffle combines a Dr Bristol mouthpiece with D-ring cheeks and bit rings. It puts pressure on the tongue, and is a popular bit for strong horses that don’t like leverage bits.
Waterford
The Waterford D-ring snaffle has a Waterford mouthpiece made of multiple flexible links, creating a unique and mild pressure on the horse’s mouth. It is helpful for horses that lean on the bit or have a tendency to fix their jaw.
Mullen Mouth
This type of D-ring snaffle has a straight and solid mouthpiece, offering a more consistent pressure on the horse’s tongue and bars.
Twisted
This D-ring snaffle has a twisted mouthpiece, which applies more pressure to the horse’s mouth compared to a smooth-mouthed snaffle. It should be used with caution and only for horses that respond well to stronger aids.
Copper Mouth
Some D-ring snaffles have copper or copper alloy mouthpieces. The copper material encourages salivation and a softer mouth, promoting better acceptance of the bit.
Rubber
A D-ring snaffle with a rubber or synthetic mouthpiece provides a softer and gentler feel in the horse’s mouth, suitable for sensitive horses or those with dental issues.
Happy Mouth
The Happy Mouth D-ring snaffle features a plastic, apple-scented mouthpiece, making it more appealing to horses and encouraging acceptance of the bit.
Materials Used To Make The D-Ring Snaffle
D-ring snaffle bits are commonly made from high-quality materials such as stainless steel, copper, or various alloys. Stainless steel is a popular choice due to its durability and resistance to rusting and corrosion. However, copper is also a popular choice for the mouthpiece as it encourages salivation, promoting a soft and responsive mouth.

Benefits Of The D-Ring Snaffle Bit
D-ring snaffle bits offer several benefits for both horse and rider.
Safety
Unlike other types of fixed cheek bits with long and exposed cheek pieces, the enclosed ‘D’ shape of the bit rings removes the possibility of the bit snagging or getting caught on things whilst still providing the lateral stability of straight cheek pieces.
Stability
The D-shaped rings prevent the bit from sliding through the horse’s mouth, helping to maintain a steady position and preventing potential pinching. This design also aids in directing the horse’s focus and encourages turning aids.
Promotes lateral flexion
The straight built-in cheek pieces help provide good lateral control, encouraging the horse to bend during lateral movements. This is particularly useful for disciplines such as dressage and reining.
Gentle action
The fixed cheek pieces distribute pressure evenly on the horse’s mouth, reducing potential discomfort and encouraging a more relaxed response. It is an ideal choice of bit for training, schooling, and everyday riding.
How To Use A D-ring Snaffle Bit
The mouthpiece should be wide enough to fit the horse’s mouth. There should be a slight wrinkle at the corner of the horse’s mouth when the reins are slack.
Start with light rein aids to allow your horse to adapt to the bit’s action. Use clear and consistent cues, maintaining a soft contact, and rewarding positive responses. Remember that each horse is unique, so be patient and adjust your approach as needed to suit your horse’s temperament and needs.
Horses Most Suited To A D-ring Snaffle
This mouthpiece is suitable for a wide range of horses, from young and inexperienced to well-trained and sensitive individuals. Its gentle action and stability make it an excellent choice for horses with a sensitive or soft mouth.
Key Takeaways About D-ring Snaffle Bits
D-ring snaffles are popular and versatile bits for all levels of riders and suit most horses. They are a safe option for riders who want the precision and lateral control provided by straight cheek pieces without the worry of having them snag on things.
The type of mouthpiece used in the bit will determine its method of action and ‘severity’.
Overall, though, like most bits, being a direct action bit means these bits provides milder and gentler cues than leverage type bits.