The StraitLine Chalk Refill Permanent in Blue is formulated as a standard indoor/outdoor chalk solution, ideal for general-purpose marking applications. This versatile blue chalk provides excellent visibility on most surfaces and offers durability of up to 1 week, making it perfect for projects where temporary but reliable marking is required. The blue colour offers excellent contrast on light-coloured materials such as timber, plasterboard, and concrete, ensuring your layout lines remain clearly visible throughout the working period.
This formulation strikes an ideal balance between visibility and ease of removal once your project is complete. Features and Benefits: • Blue colour for excellent visibility on light surfaces • Standard indoor/outdoor formulation suitable for most applications • Lines remain visible for up to 1 week • Easy refilling for all standard chalk line reels • Ideal for temporary marking requirements on construction sites Specifications: Colour: Blue Size (g): 227