Excellent jig – clever and well made with high quality components. One sliding positioner works with both 2-1/4 and 2-1/8 Forstner bits via nylon reducer/positioner bushings. Other size sliding positioners are available for 35mm, 55mm and 68mm Forstner bits.

This paid for itself in a single job. Use was incredibly easy and no more false bottoms to build and install. Do not hesitate to buy, it works beautifully.

Bought this jig to install 8 lights in a euro-box kitchen. We put in 8 Tresco L-1EQPWNI-KIT EquiLine lights in about a total of 45 minutes from start to finish. Eliminating the false bottom saved me hours. Customer was pretty happy that they had a little extra shelf space (she was a little short so the bottom shelf is a little closer for her). I plan to use this on future kitchens and closets, the bits seem like they will hold up a while.
I should mention that you will need to consider where to run the wire from the bottom of the cabinet. This was not addressed very well in the instructions but most people using this will know what to do with it. I ran mine up the back of the cabinet to the top of the cabinet, where I daisy-ed my power supply to the other lights. You may need a extension block Tresco sells to add more lights, my power supply accepted 6, so I got an extender to add 5 more, which was around 20$ bucks. Then after all was installed, I put in the crown molding to hide it all. The material and labor savings paid for itself on the first job, pretty cool little jig. I really hate doing false bottoms and have actually turned down my last few light jobs because of them. Look forward to using this again when the next job comes around, lights are a pretty good way for me to add profit my kitchens.