Life/form® Adult Replacement Trachea Inserts by Nasco Healthcare $128.95 LF00994 B Life/form® Adult Replacement Trachea Inserts / LF00994 B / Cart Title Life/form® Adult Replacement Trachea Inserts Product ID LF00994 B CheckoutType Cart Add to cart Pkg. of 6. Includes four rigid and two soft inserts. To be used with Life/form® Cricothyrotomy Simulator (LF00994U).