Irwin Sl300 One Handed Bar Clamps/Spreaders 24 In.

I don't know why there are so many negative reviews. These are great clamps. I bought 2 6" and 2 12" when I was putting my deck on. Marvelous thing these are. These are my first bar clamps and I don't know how I got along without them. I use them ALL the time. I just bought the deck board accessory and I'm sure it will be just what I need to pull boards into position. The most useful feature for deck building was using the clamps to hold a post mount jig in place until the through bolts were attached. This is a homemade thing that slides over the post. Two sides are longer and will hold the jig to the post. The jig rest on the rim joist

We have been fans of these clamps for decades. Our family uses them day, after day, after day, and none of us have ever had one fail. Ever. These clamps and the Speedbor bits are what initially turned me on to Irwin. It's refreshing to still be able to find a tool that you can buy once, maintain, and have last indefinitely. Some of my Irwin clamps are older than all five of my children, combined.