16 Round 7/8" Multi-Gauge Domed Glide Inserts for Furniture Tubes/Legs Material:Plastic There are some exceptions like

There are some exceptions like Homecrest or Samsonite which use two layers of material on some of their furniture to slide the slings over an internal frame

Ships Fedex Ground

This round multi-gauge ball insert fits a tube with an outside diameter of 1-1/4" and an inside diameter hole of approximately 1-1/8" - 1-3/16" (14 to 20 gauge tube)

re-use those from your existing swivel rocker)

16 Round 7/8" Multi-Gauge Domed Glide Inserts for Furniture Tubes/Legs Material:Plastic There are some exceptions likeThis round multi gauge domed insert glide fits a tube with an outside diameter of 7 8" and an inside diameter of approximately 3 4" (14 to 20 gauge tube).