DEWALTCircular Saw Dust Collection Adapter, DWE575/DWE575SB Compatible (DWE575DC), Black

Works great on dcs575 FlexVolt saw. The adapter has an opening for the dust chute so that the chute will still work with out a dust collection vacuum hose fitted on. When I use the hose I like to tape over the chute opening if I'm not using a powerful vac and the dust collection works even better. It would be nice if there were a cover that could be slid open and closed. I mostly use a cordless dewalt vac and that's when I use tape over the opening. Fits on to the saw easily although the drawing in the instructions shows a locating tab and the illustration isn't accurate but it's easy to figure out. Look at the saw port and look at the inside of the plastic parts that fit onto the saw and it explains it's self. There are 2 plastic screws (ph2) that clamp the 2 parts of the adapter together. One of the installation screws is only accessible from the battery port side and is better accessible with an angle drive or a ¼" bit-ratchet but I was able to install mine with a normal screwdriver handle well enough by driving with the bit at an angle in the screw recess and additional pressure into the screw recess. The part is abs plastic and seems durable enough but could be cold welded with acetone if it ever breaks. It comes with an additional lower guard lever which must be installed for the lower guard to work with the adapter as the adapter protrudes enough on the side that it is in the path of the stock guard lever. The guard lever that comes with he adapter looks just like the stock one except has a bend to angle the tab out away from the adapter. and is easy to change out with a t-25 or with a slotted bit screwdriver. The guard levers are stamped steel but are hardened and are very tough. I tried to alter the angle of the one that came with the adapter slightly with pliers but was un-successfull. It could possibly be done with a vise but the angle is fine as is. I hope this is helpful.

LONG STORY SHORT:When looking for a dust collection adapter for my "DEWALT 20V MAX 7-1/4-Inch Circular Saw with Brake, Tool Only, Cordless (DCS570B)" it was really difficult to figure out IF there was even adapter for it. THIS ADAPTER FITS even if it's not listed as one of the saw options in the description. Works great!PROS:-Fits perfectly on my DCS570B circular saw. No issues, gaps, jerry rigging....it was made for this saw as well, it's just not listed as one of them.-Ribbing/Ridges on the back of the port connect great with my Cen-Tec adapter system (as shown in photo). Holds them on tight.-Side port allows for dust to shoot downward instead of backward...if not using dust collection. Making the saw still function as originally designed.CONS:-Figuring out what (IF ANY) dust collection adapter would work with my DeWALT circular saw was a chore. It's not listed as one of the "options" in this description, nor is Dewalt's website helpful in the matter. I had to make an educated guess based on information I'd seen...and it worked out.-I wish there was a little sliding door on the side vent, so you could close it, when you're connected to a dust collection system. Not that it really seems to make a big difference, but it's hard to tell, and would be a nice option. However...any moving parts and pieces are liable to break...which is probably why they didn't bother.CONCLUSION:Buy. Fits perfectly on my DeWALT cordless DCS570B circular saw, and is incredibly effective (with my Cen-Tec system) in greatly reducing the amount of dust in my woodshop.

Fits the new cordless DCS578 (PERFECTLY) as well as the DCS575. I own both saws (which I admit is silly since they are identical except for the motor). It works a LOT better than nothing but don't expect it to be like Festool dust extraction. You are still going to have a lot of dust on the floor. The hole in the side is a good idea so that you can use it when you are not near your dust collector or shop vac and I use it with a piece of duct tape over it.Glad I got it but I do wish there was a circular saw with effective dust collection that was even halfway reasonably priced (unlike Festool). Yes I would buy this again. Another note: The 60V saws do NOT need the replacement blade guard retraction lever that comes with this. A good quality screwdriver (Klein or similar) will tighten the bottom screw fine when held at an angle to clear the battery housing. If you use the typical chinese screwdriver, expect to play with it a bit and maybe get a bit creative, but it's not a big deal.