• You calculate the right bit size by measuring the width of the horse’s mouth (at the position of the bit) plus 1 cm.
• The thickness depends on the anatomy of the horse’s mouth. Check if your horse can close its mouth completely with the bit in. 
• The wrong size or thickness can cause pain in the horse’s mouth.
• Tip: Oversized 2x broken Bit are normally no problem. Oversized 1x broken Bit increased extremely the nut cracker effect.

Appropriate bits for various riding disciplines

• Dressage: 2220; 2221; 2222; 2230; 2250; 2270    
• Showjumping: 2220; 2221; 2222; 2230; 2240; 2250; 2251; 2270
• Eventing: 2220; 2221; 2222; 2230; 2240; 2250; 2251; 2270
• Hunter Jumper: 2220; 2221; 2222; 2230; 2240; 2250; 2251; 2270

Competence of the rider

• Here lies the biggest problem, as riders often misjudge their abilities
• First class advice should come first - for the well-being of the horse
• A bit cannot solve all problems, especially not the rider's lack of skills