Hand needles are slender, pointed tools used for sewing by hand. They come in various sizes and types, each designed for specific tasks. Common types include embroidery needles, quilt needles, and darning needles, which differ in thickness and eye size to accommodate different threads and fabrics. Typically made of metal, hand needles have a sharp point at one end and a hole, or eye, at the other for threading. They are essential for various sewing projects, from simple repairs to intricate crafts, making them a staple in any sewing kit.