• Maintains threads by screwing proper collect size down on exposed threads.
• Only a few threads need to be exposed for a positive grip. To use, simply screw proper collect size onto exposed thread.
• Place housing over collect. Back off housing for removal. Reverse process to install. Tightening housing bolt clamps collect down on stud. Easily removes exposed studs form engine blocks, manifolds and other areas.

• There are 14 collets:
  M6 x 1.00,、M7 x 1.00,、M8 x 1.00,、M8 x 1.25, 、
  M9 x 1.00,、M9 x 1.25, M10 x 1.25,、M10 x 1.50,、
  M12 x 1.25,、M12 x 1.50,、M14 x 1.50,、M14 x 2.00,、
  M16 x 1.50,、M16 x 2.00.