Keson K1 100 ft. Chalk Box w/4 oz. Red Chalk

Grab-and-go snapping made easy. The Keson K1 bundles a durable 100-ft chalk box with a 4 oz bottle of high-contrast red chalk, so you can start marking straight out of the package. The sturdy housing, smooth crank, and bold, high-hold line deliver crisp, visible snaps on wood, concrete, and sheathing—perfect for framing, roofing, and general layout. Fill, snap, rewind, repeat.

Key Features

• Ready out of the box: Includes a 4 oz bottle of red chalk for immediate use.
• 100 ft capacity: Long reach for exterior layout, forms, and fence lines.
• High-hold line: Retains chalk for bold, consistent marks across rough surfaces.
• Durable housing: Impact-resistant case stands up to drops, dust, and jobsite grime.
• Smooth manual rewind: Fold-away crank pulls in line quickly with controlled feel.
• Leak-resistant fill cap: Wide mouth makes refills cleaner and faster.
• Secure steel hook: Bites onto nails, screws, or edges for one-person snapping.
• Serviceable design: Easy to open, clean, and keep chalk flowing between refills.

Brand/Model: Keson K1

Product Type: Chalk line reel (chalk box) kit

Line Length / Units: 100 ft (standard-diameter chalk line)

Included Chalk: 4 oz bottle, Red (standard/removable)

Material (Housing): Impact-resistant polymer case with metal fasteners

Material (Line): High-hold cotton/poly blend (optimized to retain chalk)

Rewind Mechanism: Manual fold-away crank, 1:1 take-up

Fill Port: Leak-resistant screw cap; wide mouth for clean refills

Hook: Steel end hook for nails, screws, and edges

Mark Visibility: Bold, high-contrast red snaps on wood, concrete, and sheathing

Serviceability: Easy to open/clean; wide opening for fast chalk replenishment

Compatibility: Works with standard removable or permanent chalk powders

Weight: ~0.7 lb (reel empty); ~0.95 lb with included 4 oz chalk (approx.)

Dimensions (Overall): ~7 × 4 × 1.6 in (compact, pouch-friendly; approximate)

Operating Use: Best in dry conditions; keep cap closed between snaps

Storage: Empty excess chalk for long storage; keep dry to prevent caking

Color: High-visibility housing (typical Keson orange/black)

Manufacturer Part Number (MPN): K1

Country of Origin: Varies by batch (check product label)

Q: What exactly comes in the K1 kit?
A: The kit includes a 100 ft chalk line reel (chalk box) and a separate 4 oz bottle of red standard-grade chalk.

Q: Is the included red chalk permanent?
A: It’s standard/removable—marks typically wipe or rinse away. Always test first on porous or finished surfaces.

Q: How do I refill without making a mess or leaking?
A: Open the wide-mouth, leak-resistant fill cap, pour slowly, don’t overfill, and keep the cap closed between snaps to prevent spills and caking.

Q: Can I snap lines solo with this box?
A: Yes—the steel end hook grips nails, screws, or edges so you can anchor one end, snap, then use the fold-away crank for smooth rewind.