This Sewing Guide set includes three yellow Edge Stitch Lock & Sewing Gauges (two 4mm and two 3mm) and 5 thimbles for hand sewing. The 3mm/4mm laser - engraved scale can precisely control the stitch distance, achieving uniform stitches whether it is a straight, curved, or decorative seam. The ergonomic thumb design makes the operation easier and reduces hand fatigue. The high - quality PP material makes the product lightweight and durable, and the markings are clear and not easy to wear. For beginners, it is a great helper for learning sewing; for professionals, it can meet their high - precision requirements. It can play an important role in projects such as sewing garments, quilting, and crafting. The threading and stitch remover tool provides additional convenience during the sewing process.