We just completed installing the Grip Ring Socket Inserts on my six oak dining room chairs. I purchased replacement rollers for the chairs, and the grip ring sockets that came with the rollers did not set (no matter how hard we pounded). Your sockets appeared to have the grip "teeth" closer together (more dense), so I ordered them. It appears the problem of rollers disengaging from the chairs is no longer a threat. I have my fingers crossed that your grip sockets will stand the test of time. Thank you for the opportunity to share my thoughts with you.