EHK Series - 's EHK Series a refreshed approach to 1-handed clamps. What sets it apart from the rest is that it was designed from the ground up to deliver a clean design, comfortable grips, and 445 lbs. of potential clamping force. There are NO tools required to convert from clamping to spreading, making it useful for a wide variety of tasks. EHK clamps are great for any construction or hands-on/DIY job. Ergonomic Handle & Soft Pads - The ergonomically designed and contoured handle of these trigger clamps makes it easy to achieve maximum clamping force with one hand, leaving your basic bar clamps far behind. This, combined with 's EHK Series Soft Touch Pads, prevents nicks and scratches on your work pieces, so you can get the job done without any damage. .No Tools Required - The EHK series' ability to quickly convert from compression to spreading makes it a great addition to any tool or equipment box. Switching from compression to spreading requires no tools, so you have extra space. All it takes is a quick turn of the locking knob to release the fixed jaw, move it to the other end of the rail, and a second quick turn to lock it in place. .Unrivaled Strength - This clamp is designed with durable construction and powerful clamping force, making it perfect for tackling tough projects that require serious clamping force. .Available in Five Sizes - This clamp is available in five sizes from 6" to 36", so you'll have the perfect size for every job. Gather parts of all sizes so there's never a piece too large or small to be clamped for construction, carpentry, woodworking, or any home job.