Blue Steel Jointed Eggbutt Full Cheek Bit

A Full Cheek Eggbutt is a hybrid bit design that combines the long cheek bars of a Full Cheek with the flat, fixed ring construction of an Eggbutt — essentially an eggbutt snaffle with the extended upper and lower cheek pieces of a Full Cheek added on.

Design

• Like a standard eggbutt, the mouthpiece attaches to the ring via a flattened, oval-shaped joint that sits flush against the horse's lips, rather than through a free-swinging loose ring.
• Like a Full Cheek, it has rigid bars extending both above and below this ring, lying flat against the horse's face.
• The upper bars usually have small loops for bit keepers, connecting them to the bridle's cheekpiece to keep the bars upright and stable.
• The reins typically attach to the main ring, at the same point as the mouthpiece.

Function

• This design essentially layers the benefits of both parent bits:
• Eggbutt element — no pinching, no rotation: Because the mouthpiece is fixed flat against the ring (rather than rotating freely like a loose-ring), there's minimal risk of the ring pinching the lips or corners of the mouth. The mouthpiece stays quiet and doesn't rotate in the same way a loose-ring or plain Full Cheek ring might.
• Full Cheek element — lateral/steering support: The long cheek bars provide the same turning reinforcement as a standard Full Cheek — when rein pressure is applied on one side, the opposite bar presses against the horse's face, supporting the turning aid and helping keep the shoulders aligned.
• Combined stability: Between the fixed eggbutt joint and the long cheek bars, this bit offers one of the most stable, "quietest" feels in the mouth among the direct-pressure/non-leverage bit family — very little sideways slide, very little rotation, and strong resistance to being pulled through the mouth.
• No leverage/poll pressure: Like all the fixed-cheek/loose-ring designs discussed so far (Baucher aside, which has minor leverage), this remains a true snaffle acting only on direct pressure, with no shank/curb chain and therefore no poll leverage.

What it's good for

• Young or green horses that need extra steering support but are sensitive to pinching: Combines the Full Cheek's clear turning cues with the Eggbutt's gentler treatment of the mouth corners — useful for horses learning direction who also have delicate lips or mouth corners.
• Horses that root, lean, or try to pull the bit through the mouth: The combination of fixed bars and a stable ring resists both lateral sliding and forward pulling more effectively than either feature alone.
• Horses that need a very steady, unmoving contact: For horses that get anxious or unsettled by a moving bit, this design offers about as quiet and predictable a feel as a snaffle can provide.
• Driving and harness work: Similar to a standard Full Cheek, useful where direct, constant rein contact isn't always available and extra bit stability and steering cues from the cheek bars are valuable.
• Riders/trainers wanting maximum "quietness" from a non-leverage bit: A popular choice when a trainer wants all the stability benefits possible without introducing any curb/leverage action.

A note on safety

As with any Full Cheek design, the protruding cheek bars carry a snagging risk around equipment or fencing, so bit keepers are strongly recommended (and often essential) to hold the upper bars securely against the bridle's cheekpiece.

Competition legality

The Full Cheek Eggbutt is FEI-approved for dressage, since it remains a true snaffle with no leverage action, just like the standard Full Cheek and Eggbutt designs individually.

Summary

The Full Cheek Eggbutt combines the corner protection and mouthpiece stability of an Eggbutt with the steering support of a Full Cheek, making it one of the steadiest, most stable non-leverage bit options available — well suited to young horses learning steering cues, sensitive-mouthed horses, or any horse that benefits from a very quiet, predictable feel in the mouth.

This combines the classic single-hinge mouthpiece shape with blue steel, a technologically advanced version of traditional sweet iron, pairing the direct, clear action of a single joint with a material specifically chosen to encourage strong salivation and acceptance.

Design

• The mouthpiece consists of two bars joined by a single center hinge, producing the classic "nutcracker" fold under rein pressure — the same fundamental structure as any single-jointed snaffle.
• Blue steel is an advanced version of black steel (traditional sweet iron). It oxidizes faster and more easily than standard sweet iron, developing a light surface rust when exposed to air, humidity, and saliva.
• This surface rust has a naturally sweet taste, which is the entire functional point of choosing this material.

Function

• Nutcracker action, unchanged mechanically: As with any single joint, when rein pressure is applied, the two halves fold upward at the center hinge, applying pressure to the tongue, bars, and potentially the roof of the mouth (palate) — this fundamental action is identical regardless of material.
• Strong salivation encouragement: Blue steel's oxidized surface tastes sweet, which stimulates saliva production more actively than plain stainless steel and, according to many riders, even more readily than standard black sweet iron, since it oxidizes faster and develops that taste more quickly and consistently.
• Encourages mouthing, chewing, and relaxation: The taste encourages the horse to mouth and chew the bit, which can help relax the jaw and promote a softer, more accepting contact overall.
• Direct, clear signal: As with any single joint, there's no additional link or plate diffusing the pressure — the rider's cue remains straightforward, now paired with a material actively working to keep the mouth relaxed and accepting rather than tense or resistant.
• No leverage or added severity: As with any single-jointed snaffle, this works purely on direct pressure, with no shank or curb chain.
• Cosmetic surface rust: The characteristic rust layer is a normal, expected part of how the material functions rather than a defect, and is easily wiped off with a damp cloth.

What it's good for

• Horses that are tense, dry-mouthed, or resistant to accepting contact: The strong salivation-boosting effect of blue steel is particularly useful for horses that need real encouragement to relax the jaw and soften into contact.
• Young horses starting bit training: As with copper, blue steel is a popular choice for introducing young horses to the bit, since it actively works to build positive associations and comfortable acceptance from the start.
• Nervous or anxious horses: The taste-driven relaxation effect can help settle horses that carry tension in the mouth or jaw.
• Riders wanting simple, direct communication with maximum taste-based encouragement: Suited to horses that respond well to a single joint's clarity, but would specifically benefit from blue steel's stronger salivation stimulation compared to copper or stainless steel.

A note on severity

• The nutcracker action itself is unaffected by material — blue steel doesn't soften the mechanical fold or reduce palate contact the way a double-jointed design would; its entire benefit is taste- and salivation-driven, not a reduction in the bit's underlying mechanical severity.
• As with any single joint, horses with a low palate or particularly sensitive mouth may still find the folding action uncomfortable regardless of the material, and might do better in a double-jointed blue steel alternative (like the French Link/blue steel combination discussed earlier) if that's the case.

A note on classification

• The overall lateral action still depends on the cheek style (loose-ring, D-ring, eggbutt, Full Cheek, etc.) this mouthpiece is built into.
• This is generally considered a standard, moderate mouthpiece mechanically, with blue steel adding a strong taste- and acceptance-focused benefit on top of the unchanged single-joint action.

Summary

A Single-Jointed Blue Steel bit keeps the classic, direct nutcracker action of a single-hinge mouthpiece, while blue steel's fast-oxidizing, naturally sweet surface actively encourages salivation, relaxation, and acceptance — making it a strong choice for tense, dry-mouthed, or nervous horses, and for young horses starting bit training, though the underlying mechanical action remains identical to any single-jointed snaffle regardless of material.