The JackJaw 300 is the fast, easy and safe way to extract T Posts, U pickets and grounding rods. The JackJaw puller allows you to extract sign posts straight out of any surface. It is lightweight (21lbs) and made of durable heavy gauge steel plate and tubing. The patented jaw mechanism provides a positive grip to prevents back and shoulder strain that often results from the whiplash of other pullers. The lever arm provides a 16 to 1 mechanical advantage. With only a 100lb downward force on the handle you are able to generate a 1600lb upward force and a 3200lb gripping force on the post. For tilted posts, ust lean the JackJaw to align with the post. .