47-803 8oz CHALK REFILL - BLUE The blue chalk is high-grade and easy to use. It touts a twist-to-open spout for easy pouring and square bottle to help prevent rolling off of your work surface. Regardless of whether you are a do-it-yourself homeowner or professional contractor, this chalk marks surfaces with ease. FEATURES & BENEFITS • High-grade chalk to be used with chalk line reels • Square bottle will not roll off of work surfaces • Easy-pouring, twist-to-open spouts