RC enthusiasts, listen up - this uxcell pinion gear is exactly what you need for your car or motor projects. We're talking stainless steel construction that's built to last through some serious use. The specs are important here: 20 teeth, Mod 1 module, 8mm bore size, with an outer diameter of 22mm. The total thickness is 18mm and it comes with two set screws to secure it properly. Now, stainless steel means it's resistant to wear and corrosion, which is crucial when your gears are taking all that motor power and friction. The tooth surface is designed for smooth engagement with your other gears. Just a heads up - the manufacturer mentions it has a softer tooth surface, so while it's durable for normal use, don't go expecting it to handle extreme force situations. Installation is straightforward - just make sure you've got the right size for your setup before ordering. The machining is precise with clean teeth that should mesh perfectly with compatible gears. Whether you're replacing a worn-out gear or building something new, this pinion delivers solid performance without breaking the bank. It's particularly popular in the RC car community where reliable gears can make or break your racing experience. The package includes everything you need to get going - the gear itself plus those essential set screws. Just remember to check your measurements twice because nothing's worse than getting the wrong size gear for your project. For the price, the quality is impressive and it should give you many runs of reliable service.