20 black furniture feet square rubber feet foot caps for garden chairs suitable for all types of furniture, non-slip, keep away from wet floors protec | Fruugo UK
13mm Rubber Feet, Grey Tube End Caps, Pack of 4 Ferrules for Furniture & Chair Legs - Made in Germany (See Second Image for Ordering Guide) : Amazon.co.uk: DIY & Tools
T-Series Rubber Foot End Cap Protecter (50mm) – Rival Strength