Germanus Pipereamer Set. Lever with 4 attachments: approx. 16, 18, 20, 22 mm With this whistle tool, you can easily move your pipe and remove excess cake. The item has been proven for years. Thanks to the different attachments, the set is very durable and easy to use. Important: The tool has cutting edges. With these cutting edges should be carefully scd. Expressly, the "cake" or the wood should not be cut with great force. You would tame or even rude your whistle.