Very well thought out and effective tool. Cup easy, fast, precise on the tiled floor 10 mm thick brawny. The large diameter of the wheel (20 mm) and hardness should be important factors. Easy separation of pieces with the right size lever. The spring plate associated with the locking of the slideway sections make them easy, even for rather heavy tiles. Very good stability. Quite heavy but easy porting using the recesses in the base and lock slide and the lever (small strap provided for this purpose). XXL Size: allows poses diagonal cuts for square tiles up to 45 cm square, and this is facilitated by the possible direction at 45 ° to stop the cutting strip. One downside: slight play in the rule after locking stop, especially if a single locking screw is used; this leads to force a little too on the lock screw with the plastic molding is perhaps not very durable. Conclusion: excellent tool whose price seems justified.