Some might disagree on whether or not you need a pad for pipe clamps. I'm sure we can all agree that pipe clamps are capable of putting down some serious pressure. Even on hardwoods you are going to get a divot in the edge of your workpiece if you clamp too hard. These rubber pads help greatly in reducing that. A lot of times it doesn't really matter because you make your piece over size and trim it down later anyway. However, I feel a lot better having good edges to my work in case of a drop or damage to part of the piece that needs to be cut off. Might have to pick up another set of these, but already got 2 packs so I should be set for a while.