These mouse pads were easy to install. My mouse moves smoothly again..!! The cleaning pad works excellent and will remove the sticky residue prior to installing the new mouse pads/feet. This product worked perfect for me..!! NOTE: It may take a little extra effort removing the old mouse feet. After removal of the mouse feet, there may be a portion of the old feet that is still adhered to the mouse. I was able to rub it off with my finger and a little help from a box-cutter. After that, the sticky residue came off easily with the enclosed alcohol pad. I will buy again...Good value since you're getting 2 sets in case you mess one up or burn through this first set. I somehow managed to wear out the oem feet despite using this mouse on a cloth pad for its entire life.I would say that there is a very slight texture difference compared to the oem, but the durability seems higher. The edges are not beveled/rounded, so they're ever so slightly sharper near the edges of the shape cuts. The oem ones also have a thin film over the top of them, which wore out, hence the purchase of these replacements. These are one solid Teflon all the way through to the adhesive, so they should definitely last longer. Traction feels a bit gripper than oem, but that should smooth out with use.Small negative: I wish these were gray to match my mercury edition mouse, but it's hardly a concern. They serve their purpose, and saved me from having to buy another mouse. (Sidenote: I did end up getting the basilisk ultimate wireless anyways, which is a better mouse in just about every way, but thats for a diff review.)Great product overall.First of all, hats off to the person who measured the mouse and/or input the data into the machine that cuts these skates, because these fit perfectly on my mouse. They're pretty easy to install if you take the proper effort to remove the adhesive from the previous skates and clean the surface well.I've been using them for several months now and just want to caution people not to get discouraged if they don't glide as smoothly at first. They initially had a bit of drag/friction for me, but I think over time the frequent rubbing on my mousepad smoothed the skates out to gliding perfection.I'd say these are a no brainer if your original skates went bad or if you had to remove them in the process of opening up your mouseIt said it would fit my mouse but was a bit smaller,but it works anyways no complaints for any other reasonFirst - if you buy these, reserve judgement for a couple of days. At first I found them to be "scratchy," and was unhappy, but that quickly went away - I'm guessing it was sharp corners from the die-cuts that just needed to get worn down.The package contained two sets of skates, two 75% isopropyl alcohol wipes and a microfiber wipe (which I used to de-grunge the mouse and threw away). Installation was fairly easy, just take your time lining them up with tweezers.I knocked off one star because these are just a little too thin for my application (Razer Deathadder Elite). The sides of the mouse drag a little if you are not careful, it didn't used to do that. I think part of the problem is I had to remove the plastic film Razer used to adhere their skates to get to screws underneath (these were purchased as part of a project to repair a squeaky mouse that necessitated full disassembly). If I had left that film in place I might have added .05mm and height may not have been an issue... even so, the higher-end (though much more expensive) competing product is .80 to .85mm vs .6mm for these.Even with that one tiny issue, the mouse is still has an excellent feel and these are a solid product for a great price.I upgraded to a Razer Basilisk Ultimate for my main mouse, but my Ouroboros holds a place in my heart and I wanted to clean it up and use it as my backup. Got these sticker skates to replace mine that were beat up. Quick ship, and I'm glad it's a two pack with a nice microfiber cloth.There are two adjustment screws for the length of the mouse and to access the battery cover, and on the OEM skates there are pass through holes in the skate to easily adjust the screws. These aftermarket skates had no such holes, so I had to exacto knife the skate to provide screwdriver access. Luckily I did it precisely enough my second go round to have an even surface that doesn't catch on my mousepad.Other than that hole oversight, these skates fit perfectly and glide just as well as the OEM ones.fits perfectly, easy to install, made a 8 or 10 year old mouse move like new againGreat product and fit perfectly on my Razor mamba tournament edition mouse. Feels like a brand new mouse now. I would've preferred a single pack rather than a pair but its always good to have a back up.Good