New Proprietary Brass Alloy Flex mouthpieces are made using our proprietary Bellflex brass alloy. This alloy has extremely resonant properties and is integral to the design of our Flex mouthpieces. Check out the testimonials here. Flex Mouthpieces are Available VR Series $200.00 each VR Series Description The VR Series use our new cup and backbore balance. They produce a bigger sound with more low frequencies and are considerably easier to play. Choose your VR Series Mouthpiece here. Choices Available Both series offer different backbore choices and are available as solid shank or cut for Reeves Sleeves which allows you to adjust the gap from the end of the mouthpiece to the start of the leadpipe. Most existing mouthpieces can be redesigned to have a VR cup and backbore balance that will produce a bigger sound with more low frequencies and be easier to play. Technology Merged with Tradition All Flex Mouthpieces are made using a combination of CNC machining and hand balancing. Many Sizes Available Choosing the correct mouthpiece is a very personal endeavor. Feel free to contact us with any questions or concerns and we'll do our best to help you in your quest.