bought 2 (to have a spare after replacing the original hotend) and once installed I couldn't get on the bed low enough. After measuring the whole part, I found that the hot end is 1.7mm longer than the original. After taking it apart and inspecting each part, I found that the heatsink was milled 1.7mm thinner than the original heatsink (see pictures). If I didn't already have a 3mm thick glass bed this might work, but at the moment I can't use it on my printer at all.
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