Furniture Gliders. Screw-in Sliders Risers Floor Protectors for Ceramic Tile Natural Stone Vinyl Concrete and Similar Floors (40mm, Pack of 36) Made in Germany : Amazon.co.uk: DIY & Tools
Flexible Chair Leg Caps, w. Felt
Tube Inserts with Felt Base for Angled Chair Legs with 18mm Inside Dia – Keay Vital Parts
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SlipStick 1 in. Round Chocolate Brown Self Stick or Screw On Floor Protector Chair Glides/Slider Feet (Set of 8) CB255 - The Home Depot