These skull have been completely cleaned, boiled, disinfected, oiled and then a metal bracket was installed on the back for easy wall hanging. None of these skulls belong to species that are in any way endangered or protected. Impala, blesbok and springbok are antelopes that are very abundant in numbers. These skulls are disinfected and cleaned to levels where there is no risk to anybody as Fish and Wildlife approves their importation into the USA.