The Mach 6 chalk reel pairs a 6:1 planetary gear ratio with an aluminum housing - six times the rewind speed of a 1:1 reel, plus the impact and crush resistance you want on a framing or roofing crew. The 100 Ft hi-tensile braided line is 2.5x stronger than standard chalk line, so it survives snags on rough lumber and concrete. This bundle ships with a 4 oz bottle of Strait-Line Permanent Red chalk.

• 6:1 planetary gear ratio for fast line rewind
• 100 Ft of hi-tensile braided line (2.5x stronger than standard)
• Durable aluminum housing - resists crushing in tool bags
• Wide prong hook for secure anchoring on framing and slabs
• Robust steel handle and large center hub for daily commercial use
• 1/4-turn locking top for quick chalk refills
• Anti-jam spool design reduces line damage and twist
• Open-access back panel for fast line changes
• Includes: Mach 6 reel + 4 oz Strait-Line Permanent Red chalk

Tip: Permanent Red is the right pick for exterior, roofing, masonry, and any layout that has to survive rain, sun, or foot traffic. Marks are very difficult to remove from porous surfaces - DO NOT use red chalk on drywall, finish trim, or anything you plan to leave visible after the cut.