We got to check out some of the new DeWALT trigger clamps. They come in a variety of sizes and the larger ones have a spreader function. A quick change button allows you to convert it in seconds. These clamps are really no thrills but they get the job done and have a good solid grip. They have grooves in the pads for bar stock. They come in various sizes up to 50″, check DeWALT clamps via Amazon.com.