Strait-Line 1932876 IRWIN Speedline Pro Chalk Reel, 100' Easy Fill & Lock Top - Large, 1/4-turn locking top for quick chalk fill and easy access to reel internals - Easy fill & lock top 100' Hi-Tensile Line - Stronger for fewer breaks and for use on rough, abrasive surfaces - 2.5X stronger than traditional chalk reels 3:1 Gear Ratio Rewinds line 3X faster than traditional chalk reels Robust Steel Handle and Large Ergonomic Clutch For increased durability, strength, and torque Wide-prong Hook For secure anchoring