The Irwin Strait-Line Classic chalk reel is the standard layout tool for snapping straight reference lines on framing, flooring, drywall, and concrete. The cast aluminum housing takes job-site abuse that cracks plastic-bodied reels, and the 100 ft abrasion-resistant poly line gives 5-6 sharp chalk strikes per pull before needing a re-fill. A 1:1 gear ratio means line goes in and out as fast as you crank - no waiting for a high-speed retract to grind through the line.

• 100 ft abrasion-resistant poly line, 5-6 strikes per chalk fill
• Cast aluminum housing for impact resistance
• 1:1 gear ratio - one crank revolution per line revolution
• Robust steel handle with large center hub for fast winding
• Nested hook dock keeps the end hook flush with the housing for pocket carry
• Anti-jam spool design protects the line from kinks
• Wide refill door accepts any standard chalk bottle
• Doubles as a plumb bob for vertical layout

Tip: Use BLUE chalk for general permanent layout (framing, flooring nail lines). Use RED for permanent reference marks that must stand out from blue. Use WHITE only on finished surfaces where you need the line to brush off cleanly. Always shake the reel before each pull to recoat the line.