I have the set of 3 (Floyd Rose, Ibanez Edge, and something else I don't remember, maybe the Schaller with the short locking screws?) I've had them for years (decades?) and rarely use them, I usually just loosen the string and the saddle and move it and tighten it back, the tool would probably be better, but they have their own hassles to use. No one buys a Floyd because they are easy ;-)