Torx T25 Screwdriver Insert Bit is a professional quality screwdriver bit, that enable precise, accurate screw-driving with an industrial-quality bits manufactured from high-grade S2 alloy steel. With a fully hardened (HRC58-60), these bits are extra hard, providing a long service life. They have an excellent fit and a firm hold to the screw head prevents slippage and ‘cam-out’, enabling high operator productivity and reducing the risk of screw head or work-surface damage.