TSTAK-compatible for storing all your accessory sets in one place. Compatible with the TSTAK system via the caddy and the large Tough Case. Easy removal and storage of bits for enhanced user-friendliness. The bits lock in place to prevent them from falling out when not in use. Extremely shock-resistant. Optimized tip geometry for a complete fit in the fastener and reduced cam-out. The fully fitting head prevents wobbling and rounding of the screw head. CNC-machined, optimized torsion zone for increased bit strength and longer lifespan. The optimized torsion zone maximizes the lifespan of the drill bit and the torque even in the most demanding applications. The contoured area of the bit flexes with the torque of the impact driver to absorb torque spikes and protect the bit for a longer lifespan. Torsion zone with DEWALT logo. Includes a torsion zone drive guide with a retractable sleeve for improved stability and control of the fastener. For use with 25mm screwdriver bits. Extended lifespan of 25mm bits when used in a torsion zone drive guide. Includes a magnetic aluminum sleeve for use with 57mm, 89mm, and 150mm Flextorq screwdriver bits.