Contractors, DIYers, anyone who uses a chalk line - this Irwin blue chalk refill is exactly what you need to keep your projects moving. The 4-ounce bottle packs plenty of powder to fill your chalk line multiple times, and the bright blue color gives you excellent visibility on pretty much any surface. What's really handy is that the marks are temporary, so you can make your guidelines without worrying about permanent stains on interior walls or trim - they wipe away cleanly when you're done. Whether you're working inside on drywall or outside on concrete, this chalk does the job without fuss. The plastic bottle has a smart design that makes refilling your chalk line tool mess-free (well, as mess-free as chalk can be!). Irwin is a brand that professionals trust, and this chalk lives up to that reputation. It's one of those simple but essential supplies that you don't think about until you run out, and then your whole project grinds to a halt. Keep a couple of these in your toolbox and you'll always be ready to mark straight lines, layouts, or whatever guidance your project requires.
Free 30-day returns 
Free 30-day returns
