TORX Driver Bit - T25 - 3-1/2" - Quick-Change Shank Professional-grade power tool accessory for TORX (star) and TORX Tamper-Proof fasteners (Tamper-Proof bit head has hole in center) Heat-treated and tempered S2 tool steel absorbs shock, resists twisting and cam-out for superior tool life. Excellent quality - made in Taiwan Preferred 3-1/2-inch (90mm) length means better reach for tough-access fasteners. Magnetic tips help prevent dropped screws and bolts 1/4-inch quick-change shank fits drill chucks, impact drivers, adapters, extensions and bit holders Sold individually by head size/style: TT-25. TORX size: T-25