Li-wrenches tsa bolo ea hex, tse tsejoang hape ka hore ke li-wrenches tsa Allen kapa linotlolo tsa Allen, ke lisebelisoa tse ikhethileng tse sebelisetsoang ho tiisa kapa ho theola li-screw tsa hexagonal socket. Ka lilemo tse fetang 30 tsa boiphihlelo indastering, re motlotlo ka ho ba moetsi ea ka sehloohong oa li-wrenches tsa bohlokoa tsa bolo ea boleng bo holimo.