If you are looking for a professional and affordable poly screw seal lid for bottles, then your research is over here. Thats because our product can meet your need. Adopted of plastic materials, these caps are practical and durable for long time use, not easily break, crack or deform. Features - Color: Black -Material:Plastic - Size: 3.00X3.00X1.20cm/1.18X1.18X0.47in - These bottle caps are designed with cone area, insert its cone part into your bottles for a tight closure. - Designed to prevent liquid leakage and give you an airtight seal, provide the sealing performance you want. - If you like to brew wine or by yourself, then thesepoly seal screw caps will be a good choice for you. - With fine workmanship, the cap is durable and not easy to break, and provide a long serving time. - There are enough quantity of poly seal screw caps that can meet your different kinds of needs. Packing list4 x Poly Screw Caps