Stable double bearing design: A professional double bearing system provides stable guidance and precise cuts when trimming edges or shaping surfaces, reducing the chance of mistakes and improving craftsmanship. Wear resistant for long lasting use: alloy head delivers strong wear resistance, maintaining cutting efficiency and extending tool life over time. Complete set of 4 pieces: Includes four flush trim bits, offering replacement options and varied applications so you can tackle different projects without delay. Convenient storage box included: Dedicated storage box keeps bits organized and portable, protecting them from damage and loss and helping keep your workspace tidy. The compact design is suitable for onsite work and home workshops. Use scenario: Trimming cabinet edges for a flush seam when installing panels or veneers; ensuring alignment and clean edges on furniture pieces; carrying multiple bits to handle onsite trim adjustments or template routing without switching bits constantly.