Achieve tight miter joints with Trim Clip's Miter Clip. Simply apply wood glue to cut trim pieces, then align the glued trim pieces. Insert your mitered corner in the built in slot of the Miter Clip and squeeze handles until fully locked. If desired, you can position the Miter Clip vertically, allowing you access to nail the joint together while the pieces are still clamped. Clamp leaves negligible marks. Illustrated directions on package back. Made in the USA.