🔧 Secure Your Seals with Style! Designed to fit all jars and bottles with a 38mm (38-400) thread. 30-day hassle-free replacement program for peace of mind. F217 foam liner ensures compatibility with most products. Weighing just 1.13 ounces, these caps are both sturdy and easy to handle. Ribbed sides for a secure grip and easy removal. Leak Proof Design 38mm Compatibility Easy Application The North Mountain Supply 38-BP-15 Black Plastic Screw Caps come in a convenient pack of 15, featuring a leak-proof design with a versatile F217 foam liner, ensuring compatibility with a wide range of products. These caps are perfect for anyone looking to secure their jars and bottles effortlessly while enjoying the peace of mind that comes with a 30-day replacement guarantee.