Enhance your plumbing system with this 100 pack of 15mm Pex Barrier Pipe Plastic Stiffeners Inserts Liners. Designed with modern style and made of high-quality plastic material, these fittings and pipes are perfect for any home or business. Made in the United Kingdom, these white inserts liners are suitable for various plumbing applications. Get your plumbing job done with ease and efficiency with these reliable pipe fittings.