Ua kom koj lub tsheb thauj khoom hnyav A-ncej thiab cov khoom siv tshwj xeeb nrog peb 3 Nti Bolt Hole Casters. Qhov kev tsim kho hollow-center no ua rau muaj kev ruaj ntseg, ib qho bolt txuas ncaj qha mus rau hauv qhov chaw chassis uas cov phaj mounting tsis tuaj yeem haum, thaum lub log 3-nti muab kev ua tau zoo dua hla cov pob qij txha hauv pem teb tsis sib xws. Tsis pom qhov koj xav tau? Tiv tauj peb kom tau kev taw qhia.
