Phillips screwdriver bits are the most widely used drive system in the world. The design absorbs torque peak reducing slippage and breakage. The additional Torsion neck design is specifically suited to withstand high torque applications. The elastic property of these bits deliver professional performance that stands up to rigorous use. Supabit Extreme Impact Bits – Certified ‘heavy hitters’ specifically developed for use with the high-torque output of an impact driver.