I bought it on a whim, just to be able to say that I have a Torx polygon in my "arsenal", but it doesn't seem to have any difference in construction and durability from any small Force polygon (e.g. a 6mm-7mm hexagon). Just a little caution: the E8 does not correspond to the size of T8, nor does the E6 correspond to T6. Make sure you buy the correct size.