The new line with special weaving has more durability.

Enables to hold greater amount of chalk, and prevent line from getting tangled inside, comes with durable front plate / housing, shock-resistant case. Larger amounts circular refill hole makes refilling easy and will not leak. With large chalk capacity enables less times for refill and more efficient work. Robust metal handle gives double-speed winding.

• Specially crafted woven snap line creates Maximum Bold 0.1 in ( 2.8 mm ) lines
  
• Holds up to 25 oz ( 709 g ) chalk
  
• Large, leak-proof refill port
  
• Ergonomically designed shock-resistant case with a heavy-duty aluminum front plate
  
• Double-speed winding mechanism