1/4" X 6" MALE HEX DRIVE WITH 1/4" MALE HEX SQUARE, TYPE OF LOCK - PIN
Hex Drive Extension, Pin Lock, Drive Size (In.) 1/4, Size 1/4 In., Overall Length (In.) 6, Oiled Finish, Male Hex x Male Square, For Use With Industrial Fastening Application, High-Use Frequency, Meets/Exceeds ASME B107.17