-Our NuStar Gen 2 low friction SLB molar tubes make wire changes a snap. -A simple twist opens the SLB cap to easily engage the second molar buccal tubes. -Close the passive cap and it becomes a four walled free sliding tube that works well with both twin and SLB systems. -The low profile design with an 80 gauge foil mesh contoured pad for better bond strength. **For further product information, please contact Chat Support**