Every Dynaplusâ® TX-Drive Bit has a color band with its own color, this color can also be found on the label of the box. If you use different dimensions TX screws you sometimes have to change bit. Different dimensions of bits are difficult to recognize and that makes bits to change. This handy color system solves this problem. The Dyna Bits are, just like the Dynaplusâ® screws, of professional quality. They are made of S2 alloyed tool steel and are slightly conically shaped for a stable bit-fit and more grip while checking. The bits are packed in a handy lockable storage blister.