Awoṣe DD aarin latch elevators pẹlu square ejika ni o dara fun mimu ọpọn casing, lu kola, lu paipu, casing ati ọpọn. Awọn sakani fifuye lati 150 toonu 350 toonu. Iwọn awọn sakani lati 2 3/8 si 5 1/2 in. Awọn ọja ti wa ni apẹrẹ ati ṣelọpọ gẹgẹbi awọn ibeere ni API Spec 8C Specification fun Liluho ati Awọn ohun elo Hoisting Production.