Izikrufu zentsimbi yentsimbi estainless pentagon anti-ubusela. Izikrufu ezikumgangatho ophantsi zentsimbi engenastainless, izikrufu ezineengongoma ezintlanu, ezingeyomigangatho ezilungiselelwe ngokwemizobo kunye neesampulu.Izikhonkwane eziqhelekileyo zensimbi ezingenasici ezichasene nobusela zezi: i-Y-type anti-theft screws, i-triangular anti-theft screws, i-pentagonal anti-theft screws enekholamu, i-Torx yokulwa nobusela izikhonkwane kunye neentsika, njl.