• 3 insert lengths (0.625", 0.4375", 0.3125") are available to accommodate
  most spark plug reaches.
• The piloted reamer tap means no drilling is necessary and perfect alignment
  of the tapped hole.
• Positive mechanical locking feature means the insert will never come out.
 

• 3 insert lengths (0.625", 0.4375", 0.3125") are available to accommodate
  most spark plug reaches.
• The piloted reamer tap means no drilling is necessary and perfect alignment
  of the tapped hole.
• Positive mechanical locking feature means the insert will never come out.