Keson G100 Chalk Reel

Snap crisp, high-visibility layout lines—fast. The Keson G100 combines a tough jobsite housing, a high-hold line that carries chalk evenly, and a smooth fold-away crank for quick take-ups. From framing and roofing to concrete forms and fence runs, it’s the dependable chalk reel you keep in your pouch because it just works.

Key Features

• High-hold chalk line: Retains chalk for bold, consistent snaps across wood, concrete, and sheathing.
• Durable housing: Impact-resistant case built to handle drops, dust, and daily wear.
• Smooth manual rewind: Fold-away crank reels in line quickly with controlled feel.
• Leak-resistant refill cap: Wide mouth for clean, fast refills without the mess.
• Secure steel hook: Bites onto nails, screws, or edges for easy one-person snapping.
• Serviceable design: Easy to open and clean so chalk flows freely between refills.
• Pouch-friendly form factor: Compact, balanced reel that rides comfortably in your tool belt.

Brand/Model: Keson G100

Product Type: Chalk line reel (chalk box)

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

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, consistent snaps on wood, concrete, and sheathing

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

Compatibility: Works with standard removable or permanent chalk powders

Weight: ~0.6 lb (approx.; varies slightly by production)

Dimensions (Overall): ~7 × 4 × 1.5 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): G100

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

Q: Does the G100 come prefilled with chalk?
A: No. It’s sold as a reel only—use your preferred removable or permanent chalk powder.

Q: What’s the line capacity and type?
A: 100 ft of standard-diameter chalk line designed to hold chalk for bold, consistent snaps.

Q: How do I refill without leaks or caking?
A: Open the wide-mouth, leak-resistant cap, pour slowly, don’t overfill, and keep the cap closed between snaps to minimize spills and moisture.

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