IRWIN 93736 Bit Holder with C-Ring, 1/4 in Drive, Hex Drive, 1/4 in Shank, Hex Shank, Steel

Can be used with socket wrench or socket adapter. C-ring design contains an internal clip that fits into the retaining ring notch of the insert bit to hold the bit securely in place. Hex shank of size 1/4 in.