We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Keson black marking chalk refill in 5 lb container

Keson Industries

Keson Industries 105BLACK marking chalk refill 5 lb hand tool

SKU CH-5C6Z-P3MRR

Black marking chalk refill for self-chalking line reels, 5 lb size produces sharp temporary lines

  • TypeChalk Line
  • Black chalk creates sharp, visible lines for layout work
  • 5 lb refill keeps chalk line reels supplied on large jobs
  • Standard formula adheres well to wood, concrete and metal
  • Compatible with self-chalking reels for quick reloads

Keson 105BLACK 5 lb Chalk Refill

This black marking chalk refill supplies five pounds of standard-grade powder for self-chalking line reels. It is intended for tradespeople who need a strong, sharp temporary line on job sites. The bulk quantity supports extended layout work without frequent reloads.

Practical limits of standard chalk lines

Standard chalk lines produce marks that weather, foot traffic or moisture can erase quickly. They are not suited for permanent layout or surfaces that require a durable, weather-resistant mark. Users needing long-lasting lines should consider alternative marking methods.

Highlights

  • Black chalk creates sharp, visible lines for layout work
  • 5 lb refill keeps chalk line reels supplied on large jobs
  • Standard formula adheres well to wood, concrete and metal
  • Compatible with self-chalking reels for quick reloads

Specifications

Brand"PROCHALK"
TypeChalk Line

Questions about this item

Which Keson 105BLACK marking chalk refill size should I choose for my chalk line reel?

The 105BLACK is supplied as a single 5 lb refill bottle, so there is no smaller or larger version of this exact model to select.

What does the 5 lb capacity mean when I am snapping lines on a job site?

Five pounds of black PROCHALK powder fills a standard self-chalking reel many times, giving weeks of sharp temporary lines before a refill is needed.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.