Serious about embroidery? This Richword thread collection has you covered with 100 different colors in 40WT polyester. Each spool has 4000 meters (that's 4374 yards!) of thread, so you won't run out mid-project. The colors are seriously vibrant and colorfast - they stay bright even after repeated washing, bleaching, or exposure to sweat. Polyester thread is great because it handles temperature changes well and has high strength, meaning fewer breaks during embroidery. Works with both single-needle home machines and multi-needle industrial setups. For home machines, you'll want to use a thread stand since the spools are large. The thread is glossy and shiny, giving your finished projects a professional look. Richword actually selected these 100 colors based on what embroiderers worldwide use most, so you're getting the popular shades. Whether you're doing apparel, hats, patches, or home decor items, this thread performs consistently. The company stands behind their product too, offering support if you have any issues. Really solid quality for the price compared to other commercial-grade threads.