A roller tongue (1) for a locking system includes a spindle, which is securable to the locking system, and a roller (2) rotatably mounted on the spindle. The spindle is formed as a multi-part element and includes a pin (3) and an adapter element (4). The adapter element (4) includes a receiver (5) for the pin (3) arranged eccentrically in the adapter element (4) and is fixable in different orientations onto the pin (3).