HIGH QUALITY: It is made of high quality rubber material, keeping your car tire well inflated. It also can provide safe tire system and safe driving. WIDE APPLICATION: The standard diameter snap-on valve stems fit for most cars, like motorcycles, lawn mowers, light trucks, small trailers and wheelbarrows. SIMPLE TO INSTALL: Firstly, deflate the tire, then remove the tire from the rim, and finally insert the new valve stem from inside rim until it snaps into place. EASY TO CARRY: It is convenient to carry. When replacing a tire, the valve stem should always be replaced to make sure there is no issue during the tire changing process. PACKAGE INCLUDED: 10pcs totally. Please check the size before ordering. If you have any issues, please feel free contact us for help via Amazon email. < b > Kindly Notes: < /b > < br > Please allow the slight error in size because of manual measurement.< br > When changing the tire, please remember to replace the valve stem.< br > Please check the compatibility before purchasing.