Features: Multi-color mix design: nine color-coordinatedly keycaps, full of visual impacts, to meet the needs of personalizations. clear base design: Highly clear ABS shell allows you to clearly observe the internal structure and movement of the axes, making it easy to evaluate the stability and smoothness of the axes. Multi-axes Comparison Experience: Support the installation of 9 different BOX axes at the same time, visual comparison of the key feel, strength and sound differences. 9-key axes tester function: for mechanical keyboards enthusiasts, you can experience different axes at the same time (need to be equipped with their own axes), easy to compare the feel and sound. Strong compatibility: supports standard axes structure, adapts to mainstream mechanical axes, DIY modification is convenient. Specifications: Size: about 5.8x5.8x2.7cm/2.28x2.28x1.06in Color：As Shown Component:ABS Package Includes: 1PC Switches Tester note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.