When replacing a watchband, or fixing one where the spring bar has gone awry, this super cheap tool and set of springs will come to the rescue.
Much like an eyeglasses repair kit, a watch spring bar tool is never around when you need one. Trying to push that tiny pin in and get the spring to engage, or disengage, is maddening. If I do not just break the spring bar and send bits a flying, I'll find some tool around the house to try that invariably scratches the lugs on my watch.
This cheap box of springs and a removal tool can sit in my desk drawer and just always be there. The set comes with replacement tips for the tool, and 108 spring bars in the standard sizes.
Watch Spring Bar Tool Set for Watch Wrist Strap Repair Kit, 108PCS Extra Watch Band Pins via Amazon