This is a perfect tool for watch owners who might occasionally need to change a band size, or adjust the size of a new watch.  It comes with several extra pins, so you're OK if you bend one, or need a different size.  As long as the band is lined up well in the tool, everything stays secure while in use and the pin just slides right out.  It worked very well while I was playing with - er - adjusting my Christmas gift - a&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Stainless-Steel-Seiko-5-Automatic-Black-Dial/dp/B001EBHRR8/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Stainless Steel Seiko 5 Automatic Black Dial</a>.
The plastic does feel a little flimsy, so I don't think this would stand up to everyday use.  But if you work in a watch shop or need to adjust your watch every day, I hope you'd pay more for this tool than you would for a cup of Starbucks!  Given the price, the construction and quality are more than adequate.  If you don't abuse this tool, it should last a lifetime of setting the size on your watch, even if you get a new one every year.  And if it saves you just one separate trip to a jewelry store, it's paid for itself!
My only suggestion is that you find a tiny sealing baggie or container to keep the extra pins.  They don't store inside the tool or anything, so they could get lost easily if you're not careful.