First of all there are spacers included. PLASTIC! $100 for a dust cover with no metal washers is a shame. Get ready to cut off a piece of plastic that will fall off if you dare use it with an angle grinder. This is an angle grinder not a toy so this really overwhelms me as I wasn't planning on finding replacement discs and it delays my project of finding those thick ones! It can also cause your tool to become unbalanced, causing you to use a flashlight and large air hoop gun to remove it after 3 men with a pipe and wrench failed to work. The bottom line is, don't use plastic washers. Finally, the edger's window is too small and difficult to remove. Another downside was the difficulty in tightening the plastic strap which you will definitely have to tighten and eventually break.