Rebar e hlophisitsoeng
Tlhaloso e Khutšoanyane:
Khoele e bua ka karolo ea spiral e tsoelang pele e nang le karolo e itseng e entsoeng holim'a 'mele oa motsoali oa cylindrical kapa conical.Likhoele li arotsoe ka likhoele tsa cylindrical le likhoele tsa conical ho latela sebopeho sa motsoali;E ka aroloa ka khoele e ka ntle le khoele ea ka hare ho ea ka boemo ba eona 'meleng oa motsoali,' me e ka aroloa ka khoele e kgutlotharo, khoele e khutlonnetsepa, khoele ea trapezoidal, khoele ea serrated le likhoele tse ling tse khethehileng tsa sebopeho ho latela sebopeho sa karolo ea eona (sebopeho sa leino).