Irwin 4935526 Strait-Line Permanent Marking Chalk, Midnight Black, 4 LB Mounting Working Pressure: 300 psi at

Working Pressure: 300 psi at 70 deg F psi

Guaranteed protection 8 years on decks and 20 years on fences and siding

Use for new construction protection over wood floors

Size: 10" x 60"

Reshape the brushes after washing and before standing brush-side up to dry

Irwin 4935526 Strait-Line Permanent Marking Chalk, Midnight Black, 4 LB Mounting Working Pressure: 300 psi atHighlights: Size: 4 lbs Midnight black color Chalk Type: Permanent Product Type: Marking Chalk Color: Midnight Black Number in Package: 1 pk Visible after weeks of weather exposure and jobsite wear Reduces need for spray sealant Stains surfaces Cancer and Reproductive Harm www. P65Warnings. ca. gov.