These extremely strong black oxide steel Fence Clamps using a sacrificial fencing or stop block so easy you will question where they have actually been all your life. Just pierce a 7/16" opening in anything you want to secure to your saw's fence and afterwards put the straight side of the clamp into the opening and place the clamp side on the back of your fencing. I directly make use of these in my store, I have one that is used along my miter saw fence that I have actually connected to a wood block that I cut at a 45 degree angle. It is perfect for reducing repeatable sizes for frameworks or any kind of work. I also have one on a straight block of timber that is attached to my router fencing as a quit block.