64310 CHALK LINE REEL, 100' STRAIT-LINE W/ABS CASE | The IRWIN STRAIT-LINE Speedline Chalk reel features a features a fill door that is more than 70% larger than the previous design for quick and easy chalk fill. The 100 ft abrasion-resistant poly line provides up to 6 strikes per pull. The reel has a 3:1 gear ratio to rewind the line 3X faster than traditional chalk reels.