If you do a lot of edge-glued panels, then Parallel Action Clamps are the clamps for you. These clamps are designed specifically with the idea of making edge-glued panels come out perfectly flat, without any bowing and without the need for using cauls to keep the boards aligned straight. These heavy-duty clamps can also be used as spreaders, by reversing the headstock, a process that takes mere seconds. Although the clamps are heavy-duty, they are lighter than the competition, making them easier to work with. If you want your glue-ups to come out right, these are the clamps for you. Features: Lighter weight than the competition, making them easier to work with. Serrated rails for positive headstock positioning, without the locking mechanism digging into your rails. Provides 1,000 pounds of clamping pressure; considerably more than the 250 pounds of maximum pressure that glue manufacturers recommend. Rubber overmolded handles for a secure grip. Easily reversible head, so the clamp can be used as a spreader. Flat-bottoms on the head, tailstock and tailpiece make the clamps self-supporting. Available in 24” and 40” sizes.