Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Big disappointement

Having owned a Portalign drill guide, now no longer in production, I thought thisGeneral Tools 36/37 Precision Drill Guide for with 3/8-Inch and 1/2-Inch Portable Electric Drillswould be a great replacement. Well this Chinese knock-off is horrid. The guide rods are too small, the base and cross piece are plastic, and the bearing is so loose I was afraid to use it. I was please that Amazon refunded the full amount with no expense on my part - not even the return shipping.