gofast innovations jis screwdriver set gofast innovations not your ordinary screwdriver set! the unique shape of gofast innovations screwdriver tips fit both jis as well as phillips screws. they come as a set of 3. #1 has a 70mm shaft, #2 is 100mm #3 is 150mm. one piece shaft from the tip to the unique hex fitting on the head. use a socket or a wrench on the hex fitting for added power. heat hardened and magnetized. ergonomically designed handle that fits comfortably in the hand for all day comfort and maximum torque. the only screwdriver set you'll ever need! type "gofast innovations" in to amazon to see more quality tools.