Prochalk Permanent Marking Chalk

ProChalk Permanent chalk for weatherproof and waterproof lines that aren’t going to go away any time soon. Most users are choosing this level of intensity for applications that are going to be covered. This level is engineered for more extreme conditions. Exterior applications include exterior layout, extreme conditions, concrete layout, long-term applications.

Black Chalk: This product can expose you to chemicals including Crystalline Silica which is known to the State of California to cause cancer and Carbon Black which is known to cause reproductive harm.   For more information, visit www.p65Warnings.ca.gov

Other Colors: This product can expose you to chemicals including Crystalline Silica which is known to the State of California to cause cancer.  For more information, visit www.p65Warnings.ca.gov