Shires Sweet Iron Copper Tom Thumb Bit #507 - 14mm Mouthpiece, 140mm Cheek, Sweet Iron & Copper Ribs

Stop struggling with a horse that leans on the hand and start enjoying a refined, responsive connection that rewards lightness and relaxation. The Shires Sweet Iron Copper Tom Thumb #507 is the ultimate solution for riders seeking to discourage "grabbing" while promoting a soft, salivating mouth through advanced metallurgical design.

Engineered for the discerning English rider, this bit utilizes the natural oxidation of sweet iron paired with the warmth of copper to create a highly palatable experience that horses instinctively accept. The double-jointed lozenge link is a critical upgrade over traditional designs, eliminating the harsh nutcracker action to distribute even pressure across the tongue and bars for clear, humane communication.

Key Features & Specifications:

• Sweet Iron & Copper Mouthpiece: Naturally oxidizes to create a sweet taste that encourages salivation, helping your horse stay relaxed and "on the bit."
• Raised Copper Ribs: Strategically designed to discourage horses from taking too much hold or leaning, providing a tactile distraction for horses with "busy" mouths.
• Double-Jointed Lozenge Link: Anatomically shaped to prevent palate interference and the nutcracker effect, ensuring consistent comfort during lateral and vertical cues.
• Technical Dimensions: Features a balanced 14mm mouthpiece thickness and 140mm (approx. 5.5") cheeks for effective, mild leverage action.
• Discipline Versatility: An exceptional choice for Show Jumping, Eventing, and Cross-Country schooling where extra control and precision are required.
• Precision Sizing: Available in a full range of sizes including 4.5", 5", 5.5", and 6" to accommodate everything from ponies to large warmbloods.

Frequently Asked Questions:

Q: How do I ensure the correct fit for my horse?
A: Shires bits are measured straight across the mouthpiece from the inside edge of one shank to the other. Because the shanks sit against the horse’s lips, the bit should fit snugly without pinching; if your horse is between sizes, we recommend sizing up by 1/4" to ensure the shanks do not rub the corners of the mouth.

Q: Is this bit legal for all competition disciplines?
A: This bit is highly popular for the jumper ring, eventing (stadium and cross-country), and general schooling. However, due to the leverage provided by the shanks, it is generally not legal for USEF/FEI Dressage phases.

Q: Why is my bit starting to rust?
A: Don't worry—this is intentional! The sweet iron material is designed to oxidize (rust), which creates the sweet taste horses love. This oxidation process is exactly what encourages the salivation and softening you are looking for.

Item Number/SKU: 507BLKSWI4.5