I highly recommend these. Remember to order two sets if you're removing a-I think they may be called double din-radio. I had a 2005 Passat until last week with a radio that included a tape player and a cd player. I'm of an age where I still want my tape player. I'm having it put into my other car. Ok, so watch a couple of the YouTube tutorials on how to do this. The notched part of these keys faces inward.The slots, and therefore the keys go in horizontally. Push firmly and it will click into place. You will NOT be able to pull these keysout again until the radio is pulled out. Then the release tabs are exposed and the keys can be pulled out. My radio slid out easily. I did it by myself, and I rested the radio on the gear lever in order to pull the back plug from the radio. The antenna took me the longest of all the steps - about three minutes. . I had to find the little part to squeeze. The closest description for this maneuver is it's kind of similar to trying to unplug a wall phone that's kind of stiff. (And also I didn't want to break one of my nails.) These keys as you can see have three forks (?). The one that worked in my 2005 VW Passat radio was the Mercedes fork/prong/thingamagig. I only knew to use this one out of the three because of the YouTube video.These keys are durable. They appear to be made of a thin steal-not aluminum. They came in a manila envelope and arrived in the mail in no way bent or damaged. I thought that without the little loop that the other radio keys have there might be a problem pulling the radio out. There wasn't.1) If you bend these and cut yourself and you bleed. That is 100% your fault. You should be able to push these in with 1 finger maybe 1/4 of an inch until it clicks. If you have to force them in to the point where you are bending them, you have the wrong tool. Also make sure you use the right end to avoid getting them stuck. To get them out, simply press in and hold on the side of the clips once the deck is out while you pull them out, wiggle left to right if needed.2) Its two to a pack, seems pretty clear to me from the picture but people seem to complain about it, make sure you know how many you need. These lock in place and need to stay there to hold the locking mechanism, so if you have four spots, you need four keys.3) Dealership wanted 18.50 each. Need i say more?4) If you don't know what you are doing (example: Sticking the wrong key into the wrong hole, bending them, cutting your hands,) Stop blaming it on the seller. You don't know what you are doing and thats ok, learn from it and stop pointing your finger at someone else.These are not fancy and somewhat thin but they sure get the job done! I have a 2002 VW New Beetle that I recently purchased. The center dash bezel was damaged and you can't get it off without taking out the radio. (There are two screws behind the radio that secure the center bezel.) Anyway, several users have said that they cut themselves with them. We didn't have a problem at all but we were very careful with how we handled them. We stuck them in the slots until we heard them click and gently pulled. The radio came right out! Once you pull it out and unhook it, you will see a small latch on either side of the radio. Simply push the latch and the key will slip right back out. Although I don't plan on taking out the radio again now that the center bezel is repaired and back on, I will keep them in my car's tool box just in case. Overall, we are very pleased with the job these keys did! The seller was quick to ship, too. I ordered on Saturday afternoon and they arrived the following Thursday to our east coast home.Works for what it was intended for - which is to enable the removal of the radio from a 2004 Audi TT. That said, it leaves a bit to be desired. The pieces are very thin metal and have very sharp edges, digging into your skin when you attempt to pull them out of the radio. Also, they do not come with clear instructions (or instructions of any sort) on how to actually get the radio out of the dash.By way of explanation - you use these "keys" to basically unlock the radio from the dash by pushing them through the small slots near the bottom of the radio front panel (one on each side of the radio). This engages clips below the radio and unlocks it from the DIN/bay that it's in. You can then pull the radio out and either replace it, fix it/put it back, etc. In theory. Only there is no real guidance on how to actually extract the radio once you've used these to unlock it. If you pull on these, one of two things happens 1.) they come out, re-locking the radio or 2.) they dig into your hands painfully. I finally managed to get the radio out by pulling partially on the CD slot and partially on one of these though only with great fear that I would break my radio. I'm pretty sure that this wasn't the way I should have done it - and wouldn't recommend that method to anyone else!works well with removing OEM electronic equipment.Great value and easy to usegreat price on a tool you have to have to replace your stereo in a MercedesChances are, the time and heat that your radio have experienced over the years have probably bonded your radio system to the insides of that slot with a force more powerful than 10 Superman's. (10 Supermen?)Bought these for my Audi TT...no way the things was going to come out. Kept pulling and trying, but it kept slipping off. I mean, just look at it. It's supposed to hold on to these tiny looking tabs and pull out the whole thing? Plus you have to pull outward away from you(to make sure the tools hook onto the tabs) and towards yourself at the same time. Thus, dividing your available muscle power.Wear gloves, because you have to pull outward so hard and these tools are so thin, you'll cut your hands without protection.I don't fault the maker of the tool for the difficulty I had. The car manufacturer made sure to engineer it in such a way to make it as hard as possible for do-it-yourself'ers.Much better than the old key versions I had that always cut my hands up. I was surprised how easy these were to useWorked perfectly on my freelander radio just what I neededthey came on time, work perfectly. nice.As DesribedDid the job. Got it with registered mail on time. Got my Audi TT 2002 radio out and fixed the hazard light and the radio.