Meat Injectors are used to get your flavor of choice deep inside the thicker roasts. Simply mix up your favorite marinade and use the syringe to suck it up into the reservoir of the marinade injector. Insert into desired meat and push the plunger to get your desired amount of marinade deep in the roast. Marinade injectors work really well with turkey and other poultry. Injected poultry will tend to stay more moist during the cooking process.