3/8 square to 1/4 hex adaptor. The ratchet can be used as a conventional screwdriver in the 0° position by attaching a unique bit-holding adaptor and bit. Quick-release Rapidaptor chuck design allows fast, single-handed bit changes. Chrome Vanadium. Suitable for 1/4 hex drive bits as per DIN 3126-C 6.3 and E 6.3, ISO 1173 and Wera Series 1 and 4.
Use this durable tool around your house for even the toughest task. Engineered with quality craftsmanship, the tool is designed to get the job done under any circumstances. Hex shank bit holder Designed for insert bits only Can be used with a socket wrench or socket adapter Alloy tool steel 0.25 inch hex shank 3-inch overall length Carded Material: Metal
Siegen S0533 Hex Bit and Holder Set 15pc on USA sites