"TORX Driver Bit - T27 - 2" - Quick-Change Shank" Heavy-duty TORX bits available in individual size and length for industrial/commercial applications Industrial-grade hardened and tempered SK2 tool-steel resists stripping and cam-out Quick-change 1/4" shank works with adapters for lightning-fast swaps; secure fit in all drill chucks Fits all T27 TORX-head ('star') fasteners; most-used 2"-length Dozens of other sizes and lengths available