Jack Richeson Heavy Duty Keys, 8pk

Jack Richeson Heavy Duty Keys are made from pine wood and work with stretcher bars for the artist to adjust the tension of the canvas, preventing sagging or drooping. These keys are meant to be used with the Jack Richeson Heavy Duty Stretcher Bars.

• Designed to tighten canvas to prevent sagging or drooping
• Can be used for preexisting canvas to help bring back to life
• Constructed from pine wood
• 8 keys are needed for one frame