Streamline™ Direct Flow™#100. The #100 tip is 40% thinner than #10 tip. Tip is round in cross-section. Direct Flow™water delivery allows water to exit near the tip, focusing water flow directly on the tip while reducing excess spray and increasing visibility. For use on light to moderate deposits. Use on low to medium power settings. Thin shank allows effective subgingival and interproximal access. Ideal for periodontal maintenance and localized periodontal defects. Ergonomic, wide-diameter black resin handle. Color-coded for at-a-glance tip identification.