This is a brand new 3D printed set of 2 x TPU fade/balance knobs. The knurled design is easier to operate than the original. TPU is a flexible plastic often used for flexible protective phone cases. These knobs do not have a metal insert like the original plastic factory knobs, they slide right onto the switch. They fit snugly and will not come off easily. These knobs are very easy to install and have been tested in factory Chrysler and Jeep radios. These come in black printed at 100% density. Custom colors are available upon request for an additional fee. These are 11mm long with 7.25mm diameter, make sure your radio looks like the one in the picture to confirm that these are the correct size for your vehicle