Review on SPEEDWOW Compatible 2015 2020 FL3Z99000A64B FL3Z 9928408 AB by Andrew Cramer

Installed every 4 last weekend in about 15 minutes. For the price they are great. The screws went in with no problem (hint, use some lube - I used petroleum jelly) and they're a nice tight fit. The spikes themselves are fine for attaching, but the attachment piece is encased in plastic so it's easy to break if someone tries to remove them. I'm not sure why anyone would really want to steal them though, and for half the OEM price I'd say it's worth it. 4 stars for durability as the spikes have some play in the plates.