Needles are slender, pointed tools commonly used for sewing and stitching. They are typically made of metal, plastic, or other materials and have a small hole, called an eye, at one end to hold thread. Needles come in various sizes and types, each designed for specific tasks, such as hand sewing, machine sewing, or embroidery. In addition to sewing, needles are also used in medical settings for injections or drawing blood. These medical needles are often made of stainless steel and come in different gauges, which indicate their thickness. Both sewing and medical needles play essential roles in their respective fields, contributing to everyday tasks and healthcare.