I purchased two of these. Using one for my Skill worm drive saw. The saw used to twist my wrist when starting, but no more. This soft starter works on all my metal and wood cutting tools. These are amazing products.
Handy little addition to the shop.
Seems to work on most of my power tools.
Unfortunately it does not work on my job site table saw.
Likely could have gone with the less expensive soft starter and bought two for the same price.