
The Irwin Strait-Line blue chalk powder refills your chalk reel for clear marking lines indoors and out. The 1.3kg bottle holds plenty of standard blue chalk for snapping straight layout lines, with a washable formula suited to interior and short-term exterior work.
The standard-permanency chalk marks clearly and cleans up easily when the job's done, making it a practical choice where you don't want lines to stay forever. Top up your chalk line and get back to snapping accurate reference marks across timber, board and floors.
The Irwin Strait-Line Blue Chalk Powder is a marking chalk for interior and short-term exterior applications, offering standard permanency and easy cleanup. It is formulated for marking surfaces indoors and outdoors for short durations.
A practical chalk refill for snapping straight, temporary lines.
It refills a chalk reel so you can snap straight reference lines for layout and marking work.
It is blue, a standard-permanency colour suited to interior and short-term exterior use.
The bottle holds 1.3kg of chalk powder.
Yes, blue chalk is the more washable, temporary option, which makes it easy to clean up after the job.
Open the reel's fill port, pour in the blue powder, close it up and wind the line back in.
