Needle holders are specialized surgical instruments used to securely grasp and manipulate needles during suturing procedures. They typically feature a ratchet mechanism that allows the user to lock the needle in place, providing better control and precision while stitching tissues together. These tools come in various sizes and designs, catering to different surgical needs. Some needle holders have curved jaws for easier access in tight spaces, while others may have a textured grip to enhance control. They are essential in fields like surgery and dentistry, ensuring effective and safe closure of wounds.