Impeta ya Lock isa nicyuma cyuzuye. Ifite gufungura icyenda, imwe hagati n'umunani muri perimetero, igaha isura yumurabyo hamwe namababi. Bitewe no gufungura byinshi, gufunga impeta birashobora kwakira amasano menshi. Ibi kandi bishoboza gushyira inkoni muburyo bugoramye, haba kuri 45 cyangwa 90.
Kuberako bashoboye kwifatanya nibice byinshi hamwe, impeta ya impeta irashobora gukora ibintu bitandukanye. Abantu bakunze kubikoresha kubintu bidasanzwe (gufungura ikirere), imirenge yinganda), cyangwa mugihe inzitizi zimwe, iminara, iminara ninyubako zihagarara) zitubuza kwishyiriraho ubundi bwoko bwa scafolding. Muyandi magambo,Gufunga impetanigisubizo cyiza kumishinga igoye.