This package contains 100 spots which are brass plated and have a diameter of 3/8" and 1/4" inch posts.
You don't really need to have a tool to use these on fabric or leather. I just line up where I want them and cut a small slit and with some leathers you can just push the legs right through. The legs bend up very easily to fasten the spot in place.
Great for the do it yourself crafter. Can be used for leather projects such as collars, wristbands, purses, shoes or any other items of clothing.