The Spang Jar generates impact force required downhole to manipulate tools and sever shear pins.

Jar impact is mainly affected by speed of movement, applied stem weight above the jar, stroke length, and deviation. Peak Spang Jars are available in various stroke lengths, diameters, and connection options to suit the customers requirements.


  • Provide upward and downward impact in conjunction with the toolstring weight and wireline speed

Features & Benefits

  • Supplied in a range of sizes and stroke lengths to suit most application
  • Offered with available third-party proprietary connections to suit customer requirements