Ezindaweni ezinkulu zezimayini nasezinkwalini, izinsimbi zokumba izintambo eziphezulu ziyizinto ezisetshenziswa kakhulu zokumba amatshe. Ngokujula okungamamitha angu-5-15, izinsimbi zokubhola eziphezulu zesando zingakhuphula ukusebenza kahle kokubhola. Uma unendaba nokusebenza kahle kwezimayini, i-top hammer drill ngokungangabazeki iyisinqumo sakho esingcono kakhulu. Singahlinzeka ngezinsimbi eziphezulu zokubhola isando kanye ne-drifter ezime kakhulu e-China. Ngasikhathi sinye, i-adaptha yethu ye-shank, i-drill rod, kanye ne-threaded drill bit nakho kuyi-top-notch.