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

The Maximum Bold snap line with special weaving is more durable, holds more chalk and prevents line tangling. Comes with a durable front plate/housing and shockproof case. The large circular refilling port makes refilling easy and leak-free. The large chalk capacity reduces the number of refills and improves work efficiency. Robust metal handle allows winding at double speed.