42cm Middle----repair for normal thickness metal Why recommend it to you ? new design , suitable for different size dents. Updated quality High quality tools. automotive body repair tools. Newest packing design, more conveniently taking and operating.Each tool is high quality and good review from professional user.Faster making shipping and packing . Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. How to use: 1.Clean the dent with a clean wet cloth; 2.Mount the into the glue , pull the trigger to let the enter into the glue , connect the power source and preheat for 5 minutes; 3.Use a proper drawing gasket. Large dent requires a large drawing gasket. (Note: The larger the drawing gasket is, the larger the drawing force is); 4. Pull the trigger and apply the drawing gasket with extruded glue (The 4 holes of gasket should be applied with hot melt glue); 5. Fast place the drawing gasket with hot melt glue at the center of dent, press lightly until the glue cures and adheres (Let the glue cool for about 8 minutes. The cooling time should be less than 10 minutes and should be shorter slightly in winter); 6. Align the T-shaped repairer and press the drawing gasket with hot melt glue, pull the sliding rod backwards to pull up the dent; 7. Check with a Line board. If dent still exists, knock it slightly with a flattening hammer or pen; 8. Clean the repaired place with a clean wet cloth. Colour:Photo Color Material:Metal Package Contents: 1 x Car Dent Puller Tools 18 x Blue Glue Tabs/ Lifter Glue Puller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.