IRWIN 5 lb. Black Permanent Marking Chalk 4.0Ah capacity Slide switch with lock-on for

Slide switch with lock-on for operator convenience

with a clear lid so you can see what’s inside at a glance

precise results

It has a variable-speed reverse design

for concrete grading

IRWIN 5 lb. Black Permanent Marking Chalk 4.0Ah capacity Slide switch with lock-on forIrwin 5 lb Black Chalk Permanent The IRWIN Strait Line permanent marking chalk provides a weather proof line that will remain visible after weeks of exposure to weather conditions. Its durable and wear resistant so its perfect for long term jobs or medium traffic areas. The permanent chalk is available in red and black. Weather resistant lines remain visible after weeks of weather, sun and jobsite wear and tear Exterior use Concrete layout, roofing,