Features: 

· Automatic speed adjustment: Equipped with a specialized fixing device and automatic speed adjustment function for smooth operation.

· Efficient ink use: Rubber-wrapped sliding cover with a sponge and fabric overlap structure, preventing ink from settling at the bottom.

· Chalk capacity: Maximum capacity of 20ml ink, suitable for long-lasting use.

· Precision line: Comes with a 0.6mm thick, 7.5m long line that automatically rewinds for easy storage.

· Chalk marking: Includes a chalk marking device for accurate and clear lines.