Red Devil Inc.

Red Devil is a manufacturer of caulking, glazing, sealants and related surface preparation tools for glaziers, painters and masons. They are a privately owned family business with manufacturing facilities in Pryor, Oklahoma. The company is currently headquartered in Pryor, Oklahoma.

More info at

• https://en.wikipedia.org/wiki/Red_Devil,_Inc.
• https://www.reddevil.com/about-us/150-year-anniversary
• http://trowelcollector.blogspot.com/2014/10/red-devil-inc.html
• https://www.garagejournal.com/forum/threads/red-devil-hand-tools.374811/