CD Series Coffee Tamper Built-in Dual Spring Structure - Equipped with a pressure-based spring mechanism to ensure stable pressure output and prevent tilting. Features a level and consistent design, making tamping easy for beginners.Spring Reset Function - After tamping, the spring resets automatically using rebound force, ensuring smooth and continuous operation.Leveling Support Spring - Designed for automatic reset to prevent tilting during tamping, ensuring a flat and even coffee bed.Spring-Activated and Automatic Rebound - The spring compresses during tamping and rebounds automatically when released, enhancing user convenience.Precise Tamping Depth - The tamping depth is approximately 23mm, suitable for a variety of coffee-making needs.