Product information is not true. 2 The designation indicates the cross-sectional area in mm². This corresponds to almost 14 hectares. I received a product that is 1.04 mm² (0.044 diameter) which is 17 ga. , which is an unusual size from 18 ga. and 16 ha. more for sale. A total disappointment in the middle of work when I realized that the wire was significantly smaller. I had to stop working and order it from another, more reliable source. Other customers have commented on 2.5 mm² and 1.6 mm². I didn't get anything like that. I used a set of digital calipers to verify what I received.