This noseband has a leveraged closure mechanism under the horse’s chin.
Leverage is typically achieved by using rings on either side, through which a leather strap is threaded before being secured.
The leverage allows for a tighter, more precise fit that should distribute the pressure evenly.
Because it can be adjusted tighter, a crank noseband is padded in the jaw area.
It prevents the horse evading bit action, and is most commonly used in dressage.