L Corner Brackets - These corners are only to be used with the BEST Aluminum Stretcher Bars. Only one corner is needed for each corner, but two steel corners are recommended for optimum strength. Required for assembly of all sizes. Sizes over 48" should be secured with two brackets per corner. Box of 4. Please allow 2 to 3 weeks for delivery.
Stretcher Key Kit - Each kit contains a set of four keys which can be mounted by using the pre-drilled holes on the Pro-Bars. Highly recommended if tightening and loosening of the canvas is desired.
Masonite Corners - These are a simple but worthwhile accessory to protect paintings. These corners are an exact 90° angle. The predrilled holes make mounting easy. To ensure that canvas corners will remain square, just nail one masonite panel to each of the four corners of the canvas. Available in 8" and 12" sizes, each in packs of 4.