MIL-S-4569C, MILITARY SPECIFICATION: SHAFT ASSEMBLY FLEXIBLE DRIVE WITH 1/4 INCH CAPACITY CHUCK (23-OCT-1974) [NO S/S DOCUMENT]

MIL-S-4569C, MILITARY SPECIFICATION: SHAFT ASSEMBLY FLEXIBLE DRIVE WITH 1/4 INCH CAPACITY CHUCK (23-OCT-1974) [NO S/S DOCUMENT]., This specification covers one type flexible drive shaft, 30 inch long, with swivel adjustable head and 1/4 capacity chuck.