This circular saw blade sharper is a brilliant piece of kit and will save me money in the long run when thinking my saw blades are £55-80 each so really its a no brainer to purchase this item and being the price it is.it simple use once you've used it within 10 minutes its built and setup to use.100% recommend this item and this does all the sizes i need and more.hopefully I should never have to buy another saw blade as you only need to take a very minor amount off each time to end up with nice sharp blade better than new.