Radial profiles of gas properties across the full TNG-Cluster sample of galaxy clusters at z = 0. Each color denotes a different halo mass: thick solid lines depict the mean profile, while the thin lines represent individual clusters. The panels, from top left to bottom right, show the radial velocity, radial velocity dispersion, gas inflow rate, and gas outflow rate. On average, gas is inflowing (with negative radial velocity) in cluster outskirts, reaching quasi-equilibrium (zero radial velocity) in cluster cores. Similarly, on average, the net gas flow across all stacked clusters is near zero. However, this is not the case for individual clusters, which can exhibit strong inflows and/or outflows of high velocity and/or high velocity dispersion gas at a variety of radii.