Iibholiti zokwandiswa ziludibaniso olukhethekileyo lwentambo olusetyenziselwa ukuqinisa izixhaso zemibhobho, ii-hangers, izixhaso, okanye izixhobo kwiindonga, imigangatho, kunye nezithuba.
Ibholithi yolwandiso ibandakanya ibholithi yentloko echaseneyo, umbhobho wokwandisa, iwasha esicaba, igasket yasentwasahlobo kunye nehexagon nut.
Xa kusetyenziswa, i-drill drill (isando) isetyenziselwa ukubhoboza umgodi wobukhulu obuhambelanayo kumzimba osisigxina, kwaye emva koko i-bolt kunye nombhobho wokwandisa ifakwe emngxunyeni.