Renae's Red Snappers Red-E-Edge Clamps--Light weight side clamps that hold securely and evenly. see video
How to put on-- http://www.youtube.com/watch?v=VdESb8_p5ec How fast you can load- http://www.youtube.com/watch?v=udj94FQ1juE
SOLD AS A PAIR.
These clamps weigh only 1 1/2 oz and pinch the edge of the fabric tightly to allow you to add side tension to the entire exposed edge. Available in 16".
Be careful that you do not roll the quilt with the clamps attached. They are rigid and this will cause the clamp to split.
Note: they are stiff the first few uses but become easier with practice and use. Open and close them starting with one end and working toward the other. Watch the video here to see it done. It can seem tricky at first ;)