The Shires Sweet Iron and Copper Tom Thumb is a specialised lever-action bit designed for horses that lean, get strong, or brace against the rider's hand. In the UK market, this design functions as a compact continental gag or loop bit rather than a traditional western shank. It combines a sweet iron mouthpiece with textured copper elements to promote salivation and relaxation, making it highly effective for horses that require precise control during jumping and fast work.
Key Specifications:
- Mouthpiece Thickness: 14mm
- Cheek Height: 140mm
- Mouthpiece Material: Blue/ Black sweet iron with raised copper ribs and a central copper roller.
- Cheekpiece Material: Rust-resistant stainless steel.
How it Works:
- Sweet Iron & Copper Oxidation: The sweet iron mouthpiece naturally oxidises in the horse's mouth. This chemical process creates a sweet taste that encourages salivation and a softer mouth.
- Textured Play & Focus: The raised copper ribs and central rollers provide an interesting texture. This keeps the horse's tongue occupied, preventing them from clamping their jaw or freezing their tongue to ignore rider signals.
- Subtle Leverage: When reins are attached to the lower loops, the short shank extension acts as a lever. This creates downward poll pressure, which helps lower the horse's head carriage and improves braking responsiveness.
This bit is strictly illegal for Dressage under British Dressage (BD) and FEI rulebooks but widely permitted for showjumping and cross-country phases.