Amana Tool - BU-125 High Precision Saw Blade Bore Reduction Bushing 5/8" To 10mm

I’ve bought 2 of these and they are so much better than the brass ones I was using. These are thicker and knurled and stay in the saw blade well when changing to other blades.

Perfect fit for my blades fo my Ryobi circular saw one

This product was just as it was supposed to be. Fit like a glove on my saw. Thank you.

Works great for the Black and Decker Firestorm 18v circular saw!

Didn’t like the price nor shipping cost but it has solved a metric/imperial dilemma that resulted in saw unwanted vibration and enabled use of more readily available and better priced metric arbour hole saw blades on my imperial arboured saw bench.

Es bueno

I got this for using a diablo blade on the M12 circular saw. The arbor is a weird size, to this allows me to use big box blades on the saw. Particularly, I'm using the Diablo fiber cement blade. The serrations help to keep the insert in place and the part is the correct diameter and width to use for this application. A little pricey, but necessary for the application.

Perfect for grinders and other things that might need a washer to help fit a different size wheel

My Ryobi circular saw has an unusual 10 mm arbor. Unfortunately pretty much all concrete diamond blades have a 5/8 in or 3/8 inch arbor. This adapter worked perfectly and is very precisely engineered. The finally engineered teeth around the ring allow you to tap it into place gently with a hammer and it is if the blade came with a 10 mm arbor it is so precise! Don't give up and buy a whole new saw just to cut some concrete, get this adapter.