Irwin Phillips insert screwdriver bits engineered for use in hand-driving applications or with power tools, designed for use in insert holder with C-clip for retaining ring notch. Compact and versatile with a 1/4 inch hex body and made from high grade S2 Steel.

The Irwin IRW10504387 Screwdriver Bits come in the following:
Pack of 2
Phillips PH1 X 25mm long