Irwin Tools Strait-Line Chalk Line, 100' Classic Reel + Blue Chalk, 100ft Irwin Strait-Line classic 100 ft. chalk reel creates crisp, highly readable straight lines with just a snap for instant marking. The new expanded chalk reel range features larger chalk fill openings designed for ease and speed and delivers best-in-class line strength and reel durability to hold up to jobsite wear and tear. Wide door for quick and easy chalk fill100 ft. abrasion-resistant poly line provides 5-6 strikes per pullRobust steel handle and large center hubHighly durable aluminum housing (description exceeds maximum possible length)