3d printed rotating disc

"A white 3D-printed plastic rotating disc, about 166mm in diameter and 6mm thick, viewed from a three-quarter angle. The disc has 4 rectangular radial slots cut into it, each slot holding one thin plastic payment card (like a credit card, not an electronic device) sticking halfway out. A small metal shaft protrudes from the center hub, connecting to a stepper motor below. No screens, no buttons, no electronics visible on the disc itself — just plain white plastic and thin cards. Positioned on a workbench. Clean studio product photography, soft even lighting, light gray background, minimalist engineering CAD-render aesthetic."