Ultra-secure AirTag caseThe shell body and back panel are made of stronger ABS composite and pure PC material, which is stronger, smoother, UNBREAKABLE. High quality material makes it not easy to be scratched, it always maintains its original appearance. We included spare parts in the package. As your pets has grown, you can change many different collars and the tool still works like new. Long Term Durability and WaterproofSolid and Resistance, even in water. There is a waterproof ring that keeps out moisture, dust, etc. Keep Airtags clean and dry. This holder has four screws that hold the tag side in place and two that go through the collar and hold the whole thing in place. (Squeeze the corners with your fingers as you tighten each screw until it just bottoms out, and of course dont overtighten.) Once in place, it is a very strong waterproof play proff for air tag. Fits any Width Collar or HarnessThis airtag dog holder can match your existing collar without changing anything, Uses self-piercing screws to easily go through synthetic or leather collars up to 0.25"/6mm (Which is about 99% of collars. Some doubled up leather or studded collars are too thick).Easy to InstallProduct comes with needed tools, easy to apply onto collar just by pushing the screws through. The case is fixed to the collar, it is difficult for someone to quickly remove it. Unless your collar falls off will not loose the AirTag and it is absolutely safe. (Not include airtag and collar) Great for Aggressive ChewersPerfect for giant or medium dogs. Holds up to water and rough conditions, your pets can roll around in the mud, run through the brush. It can wear it at everyday and it keeps airtag safe from his friends teeth. Great case for an Airtag for your pet. Must have investment for your furry friend! (Fits dogs over about 10-12lbs. Smaller than that, it's pretty big on the neck, but still works).