-STANDARDS: NF EN ISO 6789, ISO 6789, DIN EN ISO 6789 -Class II type D (A.400 maintenance). -One-direction screwdriver, right-hand torquing. -Female hex output for use with 1/4" bit. -ECR drive 1/4" - 1/4" for sockets and accessories optional. -1/4" drive on the handle for use with a ratchet handle type A.300PA. -Hex key Adjustment . -Supplied with calibration certificate, adjustment key and individual identification number.