Balance Restroom Cost And Performance With Tork Patented Opticore&Reg; Technology. Unique, Two-Part Core Design Ensures Maximum Use Of Each Tissue Roll. Closed Dispensers Promote Hygiene And Deliver Soft, Absorbent Tissue. High-Capacity Roll Keeps Dispensers Filled Longer, Reducing Waste And Maintenance Costs. Additionally, Opticore&Reg; Rolls Have 25% Less Core Material Than Conventional Toilet Paper Rolls. Opticore&Reg; Mid-Size Toilet Paper Roll Is Compatible With Tork T11 Dispensers.