€¢ Easy Fill & Lock Top features a large; 1/4-turn locking top for quick chalk fill and easy access to reel internals €¢ 100' Hi-tensile line is stronger for fewer breaks and for use on rough; abrasive surfaces €¢ 6:1 Gear ratio rewinds line 6X faster than traditional chalk reels Open access back panel allows for quick line change and cleaning €¢ Metal drive gear resists gear failure under heavy load €¢ Robust steel handle and large ergonomic clutch for increased durability; strength; and torque €¢ Wide-prong hook for secure anchoring €¢ Durable aluminum housing provides impact resistance >> The IRWIN STRAIT-LINE MACH6„¢ Chalk Reel features an Easy Fill & Lock Top that provides a wide opening for increased speed and visibility when filling the reel or accessing internals. The top locks securely with a ¼ turn to prevent unwanted spills. The 100' hi-tensile line is 2.5X stronger than traditional chalk reels for fewer breaks on rough; abrasive surfaces; and the reel has a 6:1 gear ratio to rewind the line 6X faster than traditional chalk reels."