CLAMPZILLA: https://www.woodpeck.com/clampzilla-3.html

Woodpeckers ClampZILLA 4-Way Panel Clamp places bars on both sides of your stock, joined together by a self-centering scissors joint on both ends. ClampZILLA focuses the lateral pressure on the exact center of your panel (which avoids bowing), while applying vertical pressure to keep the faces correctly aligned. That’s been true for two OneTIME Tool releases of ClampZILLA, but now we’ve improved it with more attachment points in the bars and a new scissors joint design that applies almost double the vertical clamping pressure and improves clearance on thicker work. It’s the best ClampZILLA ever, and it’s now part of the permanent product line-up at Woodpeckers.