Lub 1/2 nyob rau hauv (13mm) sib txawv ceev corded rauj laum yog ib tug sib sib zog nqus corded xyaum ua rau kev siv txuas ntxiv, dual-hom rauj laum rau ntoo, steel los yog masonry daim ntaub ntawv, ib tug zoo tagnrho cov cuab yeej rau kev siv.100% tooj liab lub cev muaj zog muab lub zog zoo. rau lub tshuab, kev sib hloov ceev tuaj yeem ncav cuag 3000RPM, cog lus tias yuav ua haujlwm zoo drilling.