Drive Torx-head fasteners with confidence using the Century Drill T25 star insert bit. The S2 tool steel body is heat-treated to 58-62 HRC, giving an ideal balance of hardness and toughness - resisting wear while flexing rather than shattering under high torque. T25 is the most common deck-screw drive size you will reach for.

• S2 tool steel, heat-treated to 58-62 HRC
• 1" overall length, 1/4" hex shank
• Fits hand drivers, 1/4" hex bit holders, impact-ready chucks, and quick-change collets
• Precision-machined tip for secure fastener engagement
• T25 size for standard deck screws (GRK, Spax, FastenMaster), composite decking screws, and most #8-#10 exterior wood screws
• MPN 68425 (Century 684XX Torx insert bit family: last 2 digits = Torx number)

Tip: Seat the bit fully in the recess before applying torque. Insert bits cam out and round the screw recess almost instantly under angled load. For driving 50+ deck screws at a time, step up to a longer T25 power bit with a torsion zone for impact drivers.