Elite Qubo Fluid trainer - Impeccable! Selling because I don't use it. It is like new, impeccable, and barely used (you can tell because the roller has no signs of wear). It is fluid-based: smooth, realistic, and very quiet pedaling, ideal for apartments. I am including the quick-release skewer. Compatible with road, gravel, and MTB (20" to 29" wheels). It works for traditional quick-release axles (5mm thick and 130-135mm wide). For modern 12mm thru-axles, you will need an adapter. The system adjusts the resistance according to your weight.