Instruct: Classify Amazon reviews into positive or negative sentiment
Query: ANDIS MASTER CLIPPER 01557

Well constructed clippers. Excellent housing and casing. Andis stood behind product after amazon seller didn't, when motor emitted high pitch grinding sound. Andis repaired and returned item within 30 days like new at no cost. These Master Clippers provide excellent grade on hair cutting. The exact same model my Master Barber uses. Quite satisfied.