E30 Pencil Brush. Benefits: Function: Soften and smoke out liner. Unique Feature: Soft and tapered pencil tip. Recommended Use: Soften pencil liners along the top and bottom lashlines, add shadow to line the eyes or use to highlight inner corner of eyes.. Coverage: Medium. Features: HIGHEST-QUALITY FIBERS:. Exclusive synthetic antimicrobial fibers. Engineered to better hold, apply + blend products. FERRULES WITH UNMATCHED STRENGTH:. Durable + corrosion-resistant SigmaAlloy. Precious metal plating for shine + strength. Exclusive, patented interlocking technology. Double-threaded engineering. SLEEK, DURABLE HANDLES:. Solid polymer-based handles are waterproof. Outlasts all product formulas + frequent brush care. :