WORKPRO 4Piece 6" 4-1/2" Bar Clamps One-Handed Clamp/Spreader Light-Duty F Clamp

It is lightweight, yet sturdy, and is capable of holding pressure for extended periods. Clamp & Spreader: The unique quick-change button design allows the f clamp to be a spreader as well. Just press the red button to take the jaw off and then reverse it before putting it back in, you will get the spreader you need.