Wera Series 4 851/4 ADC Diamond coated Bit, Phillips PH 1, 1/4" Drive
Wera Bits are designed for the most demanding applications in trade and industry.  They are designed to have the ability to transfer high torque loads, safe to use and extremely durable. Made with a diamond coated tip to prevent tool slippage while working. Wera – The Best Tools For The Job!