Instruct: Classify the given review into positive or negative sentiment.
Query: Cheap lamp...not as advertised

I've had real LuxoLamps, other knockoffs that were almost as good...and now a couple of these pieces of C__P. The positive reviews make me wonder whether they're fraudulent or if the are talking about a different lamp. The little single springs are so weak they're useless. As Berger noted, they are not as shown, no vents, different shape, different switch knob. I'm just using them to hold supplemental growlites over some indoor plants. Even with pliers I couldn't tighten the "elbow" clamps enough to trust them not to fall on the plants, so I ended up putting metal blocking between the lower arm tubes and wrapped clear packaging tape around the two upper tubes to stabilize the thing. Definitely do not buy these expecting them to be adjustable and stable like a real drafting lamp.