Product review (3 stars): Plastic guard with magnetic tape. Underwhelming.
Packaging: Wrapped in two bubble bags and taped together
Shipping: On time
Price: Did not realize there was only ONE of these extenders in a pack and had to order a second one. Little expensive.
Fit: Had to cut these to shape, but they did fit well once cut with some sheers.
Quality: meh.

Considering the cost, it may be better just to purchase one of the non-magnetic types for a third the price and buy some cheap magnet tape as that is all these have on them (and does not stay connected very well to the stovetop). That's just my opinion though and if you do not want to go to that length of trouble, these work just fine as-is.