This stainless steel watch band tool will help you get those little spring bars in and out of your watch casing. If you just shot a spring bar across the room and lost it in the carpet, you can buy more here.
“The tool seems to be well-made, however the end, which seems to be used for pushing out spring bars through drilled lugs is too large. At least on my Seiko watches I was happy to note that additional replacement ends were supplied with the tool.”