A 12-inch Allis forceps is used in surgery to securely grasp and hold dense or slippery tissues like those found in the breast, vagina, or tonsils. The long 12-inch length allows for greater reach in deep procedures, while its interlocking teeth provide a firm grip with minimal tissue trauma. 

Grasping tissue:

Used to firmly hold heavy, slippery, or dense tissues such as breast, vaginal, or thyroid tissue.

Retracting tissue:

Used to hold tissues aside to provide a clear surgical field.

Surgical stability:

Provides a secure and stable hold on tissues during procedures.