Adding weight to an arrow

[nchunterkw]

I seem to remember someone saying that some weights were stackable. In other words, the male threaded end would thread into the back of another weight.

If that’s true, how could you tighten the union? Doesn’t seem like any wrench could work?

Yes...both the Black Eagle and the GT weights are stackable. When you look at the end its like a threaded octagonal hole. SO the weights thread onto each other but also an allen wrench fits in to tighten them. And they make like a 31" long allen wrench so you can pull your nock and adjust the front end weight of even a long vertical bow type arrow.