Geeezzz??? Why is it so hard for Vevor to answer the question about the casters??? What most people want to know is what "type fo casters to purchasse"!!! Not the size of the wheels...ugh. SO DO YOU NEED SCREW IN CASTERS OR JUST PUSH IN TYPE? If screw in what size of bolt or if push in what is the diameter of the "hole" opening where the caster will be inserted...dont need the leg size!!! Like pulling teeth to get this information.