The JackJaw®300 is the fast, easy and safe way to extract U pickets, T posts, and grounding rods. This puller extracts sign posts straight out of any surface. It is lightweight (21lbs) and made of heavy gauge steel plate and tubing. The patented jaw mechanism provides a positive grip that prevents back and shoulder strain that results from the whiplash of other pullers. The sturdy lever arm gives you a 16 to 1 mechanical advantage. A 100lb down force on the handle generates a 1600lb upward force and a 3200lb gripping force on the post. Tilted posts? No problem! Just lean the JackJaw® to align with the post.