Stanley 1-47-803 Blue Chalk Refill 225g / 8oz The Stanley 1-47-803 is a 225 gram blue powder chalk refill for chalk lines. This all round colour is suitable for both interior and exterior use, with good resistance to all atmospheric conditions (water-resistant). It comes supplied in an easy pour, refillable bottle. Features: Blue: all-round colour for interior and exterior use Colour recommendations Good resistance to all atmospheric conditions Indelible Powder specially formulated for good adhesion and high visibility Water resistant Specification: Colour: Blue Contents: 225g/8oz