Adjustable 90 Degree Corner Clamp

Clamps miter or butt joints at true 900 angle for making picture frames, screens, storm windows. Holds work of different widths up to 3", leaving joints fully exposed for nailing, gluing, dowelling, or for making miter corrections. . Two countersunk holes p ermit mounting to work surface. Four clamps pre-positioned on a work surface make a framing fixture of any desired dimensions. Made of die-cast aluminum alloy.