Advantages:Rust-resistant coating process, stable three-jaw chuck structure, fine workmanship, sturdy and practical jaws, excellent craftsmanship for maximizing the lifespan. Applications:The fourth axis can be used for three-dimensional processing of cylinders, bent pipes, and circles. The fourth-axis engraving machine can be used for carving spirals, scars, bamboo joints, etc. Unlock Precision:4th Axis CNC Rotary Module Kit for TTC450 Maximum clamping diameter for round cylinders:60mm Minimum clamping diameter for round cylinders:4mm Maximum clamping length for round cylinders:Depending on the machine's working length. (Distance occupied by the chuck kit and top pin kit needs to be subtracted.) Minimum clamping length for round cylinders:Depending on the machine's tool head. Chuck reduction ratio:4:1 Center height:50mm, Total height: 76.5mm