Product review (1 stars): Excellent replacement, but cheap. Will not last.
If you own an LG range, you've found the downside of their poorly made knobs. Even worse is the standard $85 per knob price tag usually found on these knobs. These are very nice replacements, at a much more reasonable price! Unlike the originals, these have a metal insert that provides a nice snug fit on the gas valve stem.  I would recommend these to anyone who has suffered the "melted knob" syndrome so common on these ranges.

EDIT: Every one of the knobs broke within two months. Cheap plastic shafts. I'd look for better replacements