Got a circular saw blade with a 25.4mm (1-inch) hole that needs to fit a 20mm arbor? These simple reducing rings (or bushings/spacers) are your fix. This handy 2-pack from HC lets you safely and securely adapt the larger blade hole down to the smaller shaft size. Made from precise, durable material, they ensure your blade runs true without wobble. Just pop one into the center hole of your blade before mounting it on your saw’s arbor. It’s a super affordable way to expand the use of your existing blades instead of buying new ones. Perfect for DIYers, woodworkers, or anyone with a mixed collection of saw blades and tools. They come new in basic packaging, ready to go. No complicated instructions – if you can change a blade, you can use these. Keep your workshop flexible without breaking the bank.