The 5 1/2" Castroviejo "GG" Needle Holder with straight, smooth jaws and no lock is a precision instrument used for delicate suturing tasks, particularly in microsurgery and ophthalmic procedures. The straight, smooth jaws provide a secure, gentle grip on needles without causing damage, making it ideal for fine, intricate suturing. The absence of a locking mechanism allows for more flexible, quick needle adjustments, making it suitable for procedures requiring constant repositioning.