Furniture Gliders, Floor Protectors for Metal Chair Legs Round Plastic Inserts with Felt Pads, Many Sizes Available- Made in Germany (Suitable for Tubes with 12mm Inside Diameter, See Second Image) : Amazon.co.uk:
Oval Covers Chair Leg Cap Floor Protectors For Outdoor Furniture Garden | eBay
Treviso Natural & Grey Wicker Garden Sofa Chair
Modern Garden Furniture & Contemporary Garden Furniture | HEAL'S (UK)
How to Clean and Care for Outdoor Furniture Throughout the Year | Martha Stewart
Project Patio 1-1/2" Wrought Iron Furniture Feet Cap and Plastic Chair Leg Floor Protector Glide Replacement Part Inserts (24 - Pack) : Amazon.co.uk: DIY & Tools
The Ultimate Guide To Patio Furniture Feet Protectors & Glides – Sunniland Patio - Patio Furniture in Boca Raton
IMPRESA 32 Pack of 1.5 Patio Furniture Glides/Feet/Caps for Wrought Iron Outdoor Furniture “ Protect Your Floor Surfaces from Scratches, Replacement for Eight Chairs : Amazon.co.uk: DIY & Tools