IRWIN Industrial Tools, the company that invented the chalk reel in 1960, launched its new line of chalk reels to the construction industry. The STRAIT-LINE Mach6, the Speed-Line Pro, the Speed-Line and the Aluminum chalk reels all have re-designed bodies and steel handles with larger cen-tre clutches to give concrete contractors, carpenters and roofers the performance they need. The Mach6 chalk reel, with a powerful 6:1 gear system, retrieves line six times faster than traditional reels. The Speed-Line PRO chalk reel offers the same durable polyester/nylon 100-foot line as the Mach6, but with a 3.5:1 gear ratio for a 3.5-times faster rewind and a lightweight plastic housing to handle jobsite wear and tear. The Speed-Line Chalk Reel has a 3.5:1 gear ratio, and the Aluminum chalk reel has a redesigned body casing and handle. It has a traditional 1:1 gear ratio, durable aluminum housing and 100 feet of polyester line. Enhancements have also been made to the STRAIT-LINE chalk bottles, making them more streamlined to fit in the user’s tool pouch.