Free replacement--You will receive 16 pcs black threaded flip-top caps, when your caps are lost or stained, you can use these caps to replace them freely, there are enough of them, no need to worry about the caps being damaged and lost. Size Details--The black bottle caps hole diameter is 10mm/0.4 inches, outer diameter is 53mm/2.1 inches, inner diameter is 38mm/1.5 inches, height is 24mm/0.9 inches, please pay attention to confirm the size details of the bottle caps to make sure that the bottle caps fit. Classic Appearance--Plastic flip top bottle cap adopts black classic appearance, simple design, no extra fancy colour, can perfectly fit your various styles of bottles, ensure the harmonious appearance of the cap and the bottle body. Practical Design--The black replaceable bottle cap has a flip-top design that ensures a good seal while providing easy access, while the threaded edge helps you grip the cap easily when tightening or loosening the snap cap. Wide Application-- Perfect for viscous materials like shampoo, lotion, moisturizer, oil. The versatile cap is great for dispensing many different products from art paints to cleaning & beauty products.