Porter-Cable Model 557 Plate Joiner, also known as a biscuit joiner. This deluxe plate joiner features a 7.5 Amp motor generating 10,000 RPM, ideal for various woodworking applications like cabinetmaking and joinery. It includes seven cutting settings for different wood types and biscuit sizes (FF, #0, #10, #20, simplex, duplex, and max). The adjustable fence tilts from 0 to 135 degrees with a positive stop at 90 degrees, and a micro height-adjustment knob ensures precise biscuit placement.