influenced by advertising I was motivated by the purchase of an electric raps, information taken these more or less efficient appliances all preach the same defect, low abrasive surface wears out quickly and must be replaced frequently effective ..peu Dear folded .I am me ... to see! this manual grater and do not regret it but .Grande space saving toilet bag in the one is well in hand, coarse to start and petit grain for a smooth and quick hygienic .nettoyage result as the final water ..au more more more convenient than a fast reliable electric raps and much cheaper ....