The Merrow MG-3U WIDE is a 3-THREAD industrial sewing machine that is ideal for putting edges on large emblems, patches, badges, and insignias. It makes a 3/8" stitch at a standard rate of 28 SPI (though this can be decreased or increased to 20 or 40 SPI respectively), yet even while running at 5500 RPM still operates under 90 dbA.