This 1 inch (25 mm) tube closure is designed with a smooth sidewall and top in a stand up, twist cap style. Available in an M5 neck finish in both linerless and standard liner options. The modified buttress, or “M” style, thread profile offers more precise closure-to-tube thread contact for better protection against product leakage. It's compatible with 1" diameter extruded tubes. Berry Global offers a broad range of tube closures vertically integrated with our extensive portfolio of laminate and extruded tubes to offer total package solutions.