Bit set contains 10 bits and 1 Quick Change bit holder packed in an ESSBOX. The bits feature a slightly conically design and are manufactured of solid steel quality. This results in an optimal screw fit, which simplifies installation and provides the best end result. Developed in collaboration with ESSVE's screw manufacturer, which means that bit and screw act as a single unit. ESSVE recommends conical bits when installing construction screws with TX-heads.