These 3/4" round x 1" long Stan Perfex Custom Thumb Buttons are 3D printed. You will receive 1 Button/Knob with your choice of Color and Knurl pattern.  Colors include: Black, Orange, Red, and Flo-green. Knurl Patterns include: Diamond Knurl and Spiral Knurl. Please refer to pictures for colors and knurl patterns. We now offer a Machined Aluminum Diamond Knurl!! Release in Picture (Stan Perfex shown) is example of what your release could look like and is not included. Our products are American Made!