Isokhethi yensimbi engagqwali ye-pentagon socket anti-theft screw.Izikulufu ezingezona ezensimbi engagqwali ezijwayelekile, izikulufu ezinamaphoyinti amahlanu, ezingajwayelekile ezenziwe ngendlela oyifisayo ngokuya ngemidwebo namasampuli. Izikulufu zensimbi engagqwali ezivamile zokulwa nobugebengu yilezi: Izikulufu zokulwa nobugebengu zohlobo lwe-Y, izikulufo ezinxantathu ezivimbela ukweba, izikulufu ezimelene nokwebiwa ezipentagonal ezinamakholomu, izikulufu ze-Torx zokulwa nobugebengu ezinamakholomu, njll.