Sprenger produces high quality products with an above average durability. However, it is necessary to regularly check your products for proper condition and function. You should replace a product as soon as it presents a safety or health risk for horse or rider. In any case of doubt please contact your local dealer who will be happy to give you advice. In general bits are used for everyday riding for a time period of several years. Especially older and often used bits should be checked for sharp edges in the ring holes or the eyes of the joint. Sharp edged or worn out bits might cause injuries and should be replaced. You should also replace a bit when it shows sharp edges on the mouthpiece or if there are any cracks or deformation, e. g. due to a fall.