Cross theka lozungulira mutu chitsulo kanasonkhezereka mkulu otsika ulusi pogogoda screw ndi chomangira wamba chimagwiritsidwa ntchito m'madera monga zomangamanga, mipando, ndi magalimoto. Zimapangidwa ndi chitsulo chamtengo wapatali, chokhala ndi pamwamba pazitsulo zokhala ndi zinc plating, zomwe zimakhala ndi kukana kwa dzimbiri komanso kukongola.
Makhalidwe a mankhwalawa ndi mapangidwe ake apamwamba komanso otsika mano, omwe amatha kulumikiza mwamsanga zigawo ziwiri pamodzi ndipo sizovuta kumasula panthawi yogwiritsira ntchito. Kuphatikiza apo, kapangidwe kake kamutu kozungulira kozungulira kumawonjezeranso kukongola komanso chitetezo chazinthuzo.