From the Manufacturer
Use it in a router table or hold it by hand. Router RaiZer mounts to any router table and combined with your speed wrench makes height adjustments quickly and easily from above the table. Or, make handheld adjustments with the knurled adjustment knob that also works with the speed wrench. Plus, the quick adjust feature allows you to instantly set your router to the approximate depth and then micro-adjust. Fits the following routers: Craftsman 27505, 27506, 27510, 27511, DeWALT DW625, DW621, Elu 3337, 3338, 3339, Freud FT2000, Hitachi TR12, M12V, Makita 3612 series, Porter-Cable 693, 7538, 7539, and Ryobi RE600.
The Router Razor will work with the following plunge routers: Craftsman 27505, 27506, 27510, 27511; DeWalt DW621, DW625; ELU 3337, 3338, 3339, Freud FT2000; Hitachi TR12, M12V; Makita 3612-B, 3612-C, 3612-BR; Porter-Cable 693, 6931 base, 7529,7538, 7539 and Ryobi RE6000