Need to replace your caster but unsure of how to measure? Watch this to find out! Here's how to install a caster: https://www.youtube.com/watch?v=q3T_Kx2DEA8 Here's a video about how to remove a caster: https://www.youtube.com/watch?v=vPSVET2AfGI Have other questions? Call or email us: 616.608.9088 or customerservice@chairpartsonline.com Need to order new casters or glides? Find them here: http://www.chairpartsonline.com/casters-glides/ Please note: All projects seen on our channel must be completed at your own risk. We are not responsible for any damage, harm, or injury that may occur. Please utilize all available safety equipment.