Product Description Our new 2nd generation laser guide is the easiest and best way to turn your saw into a precision cutting machine. Installation is fast and easy, simply replace the outer blade flange with the laser unit. There are no confusing parts or adjustments. The laser guide provides a brighter, more accurate line on the left of the saw blade kerf and improves safety by showing you where the blade will cut. The centrifugal switch activates the laser automatically. Notes: Will not fit some 12-Inch saw models that have interlocking arbor flanges, including Rigid and ProTech. Use our Radial Arm Saw model LG-R01 for saws with a 5/8-Inch threaded arbor shaft. 630-680nm, Max Output: <5mW, Class IIIa Laser Product. Complies with subchapter J, 21 CFR CH 1. Wavelength: 630-680nm, Max Output: <5mW, Class IIIa Laser Product. Complies with subchapter J, 21 CFR CH 1. From the Manufacturer Oshlun’s new 2nd generation laser guide is the easiest and best way to turn your saw into a precision cutting machine. Installation is fast and easy, simply replace the outer blade flange with the laser unit. There are no confusing parts or adjustments. The laser guide provides a brighter, more accurate line on the left of the saw blade kerf and improves safety by showing you where the blade will cut. The centrifugal switch activates the laser automatically. Notes: Will not fit some 12-Inch saw models that have interlocking arbor flanges, including Rigid and ProTech. Use our Radial Arm Saw model LG-R01 for saws with a 5/8-Inch threaded arbor shaft.