TOTAL OF 11 HEAVY-DUTY S-BLADES - In addition to the blade attached to the deburring tool, there are 10 extra blades provided. HIGHLY DURABLE DEBURRING BLADES - The blades are made of tempered high-speed steel that makes them high performing and resistant to wear. The lifetime of these blades is 80% more than regular blades. SUPERIOR QUALITY - Equipped with aluminum handle for longevity, this deburring tool offers comfortable and secure grip. VERSATILE HAND DEBURRING TOOL - Designed for purposes ranging from DIY projects to professional industrial applications. Works on metal, plastic, PVC, and many other surfaces. TUNGSTEN CARBIDE SCRIBER TIP -Marks hard materials including hardened steel, ceramics and glass. Permanent magnet picks up small parts and retrieves steel chips from hard-to-reach places.