Wireline Knuckle Jar

Knuckle Jars are similar in design to the Knuckle Joint. It can be used as a combination of functions of Knuckle Joint & Short Tubular Jars. Knuckle Jars can be utilized to jar with short strokes to free the string.
Like in Knuckle Joint, Knuckle Jar has a built in double fishing neck.

Other sizes are available on request.