The cylinder heads today seem to be getting thinner and more complicated. And if they don't break in the seat area they will probably break on top. You are facing more heads with more cracks than you ever thought possible. And if you can't fix the cracks, well, the whole job may just walk out the door. Our Head Shop Kit can help you stitch those heads and turn lost jobs into profit. If you work on heads everyday, this may be the perfect kit for you.