golfworks, golfsmith, sponors from different forums..etc
you don't need the tool but you must have a protector tube for blow off grips (for safety reason).
you can make a tube from cutting down a club divider plastic tube sold for $1 in most stores.
0.580 is 0.020 thicker overall than 0.600 after installed on the same butt-size shaft
0.600 installed on 0.600 shaft is so called standard size
no idea what's on VR blades