The invention relates to a lance for deburring or cleaning workpieces (24). The lance (10) can be designed as a rotary lance. The lance has a lance base (12). The lance comprises at least one nozzle (14, 16), received on the lance base (12), for generating a fluid jet (18, 20). The lance (10) has an interior inside the lance base (12) which interior functions as a fluid channel (15) through which high-pressure fluid can be supplied to the nozzle (14, 16). According to the invention, the nozzle (14, 16) is formed in an insert (38, 76, 110) extending into the interior (15) and fixed to the lance base (12, 72).