The 4" width is the broad-coverage brush for wide surfaces -- siding boards, deck planks, exterior trim, and large furniture pieces. The 2-pack is a project bundle for larger jobs -- one to work with, one to swap in when the first softens from long sessions with oil paints or varnishes. Jen Poly-Brush is a throw-away polyurethane foam brush that lays down smooth strokes with minimal brush marks and no shedding bristles.

• Polyurethane foam head with tapered chisel edge
• Compatible with enamel, latex, oil-based paints, stains, and varnishes
• NOT for shellac or lacquer -- solvents dissolve the foam
• Smooth strokes -- no brush marks, no loose bristles
• Plain wood handle (product photo may show yellow handle; actual is unfinished)
• Throw-away construction -- no cleanup required
• Width: 4"
• Package: 2-pack bag

Best For: Deck staining, siding, exterior trim, fence boards, and long-session broad-coverage jobs where having a fresh backup brush keeps the finish consistent.