The leadpipe is not only the narrowest tapered (and therefore most delicate) component of a brass instrument, it also connects the mouthpiece (or rather the backbore) to the rest of the instrument. As a basic principle scaling of our leadpipes follows theoretical calculations. After much trial and error, and using the experience we have gained over the past years, we are now in a position to offer a range of different leadpipes which enable us to adjust our models of trumpet to suit all individual requirements. The taper of our standard Ricco Kühn leadpipes (leadpipes) is developed for mouthpieces with standard backbore still used today. In the case of mouthpieces with wider backbores, you should also use the leadpipes recommended for them.