TECHNICAL SPECIFICATION: Metal. The use of the PRECOIL Thread repair extraction tool or Helicoil insert extraction tool is recommended for removal of Helicoil inserts or thread repair inserts. The PRECOIL thread insert extraction tool is simple and easy to use. Correct positioning will make the extraction more manageable. The extraction tool should be slowly turned 90° from the start of the coil allowing easy winding out of the insert. In the extraction tool is not gripping the thread repair insert, the edges can be resharpened. To know more, connect with www.samsindusneeds.com. HSN CODE: 82034090