ChiaoGoo Interchangeable adapters are a clever little tool that allow you to change your needle tip to a different size cable.
Adapter A allows you to connect a [L] Large interchangeable TWIST/SPIN tip to an [S] Small interchangeable TWIST/SPIN cable.
Adapter AM allows you to connect an [S] Small interchangeable TWIST/SPIN tip to a (M) Mini interchangeable TWIST cable.