IRWIN® STRAIT-LINE® marking chalks have an innovative flip-top cap that keeps the chalk in the bottle where you want it. The flip-top cap seals the chalk in an airtight chamber, keeping out moisture and reducing the risk of clumping.

Features

• Wide door for quick and easy chalk fill
• 100' Abrasion-resistant poly line provides 5-6 strikes per pull
• 1:1 Gear ratio rewinds line
• Robust steel handle and large center hub
• Durable aluminum housing