Twist lockshlinzeka ngendlela ephephile yokufaka iziqukathi kumathreyi aphakeme ngesikhathi sokuhamba. Ama-twist locks atholakala ngezinhlobo ezihambisanayo nezingenakuhoxiswa ukuze kube nokuguquguquka kuye ngohlobo lwemithwalo. Ama-twist locks ahoxisiwe afakwa embhedeni wethreyi futhi ahoxiswa ngaphansi kwezinga le-deck. Lezi zivame ukusetshenziswa lapho kusadingeka i-flatbed, ngakho ama-twist locks adinga ukuba ahoxiswe. Ama-twist locks angahoxiswa afakwa ngqo emotweni noma kumachassis. Ikhanda lawo lokuphepha likhula phezulu kwe-deck, likwazi ukwenza kube lula futhi kusheshe ukufaka iziqukathi.
ITandemloc iletha izinhlobo ezahlukene zokuvikela iziqukathi ezivela kumathreyi ukuze kuqinisekiswe ukuphepha kwezimpahla ezijwayelekile neziqukathi. Ezinye zazo zifaka izixhumi zokuphepha ezengeziwe.