This TR618A valve is fit for 5/8" rim hole which is suitable for most agricultural tractor tire to use.This tractor tire valve can be used to replace the whole valve on the tire or you can use parts of it to repair the valve.This tubele tire valve use threaded interface design on the valve stem and valve stem cap,they can firmly lock on to each other.The wheel valve is a important parts in valve system and with this you can prevent tire valve leakage problem.This tire valve is easy to install on the right type of tire rim and you don't need any spcail tools. Specification:Material: Metal.Color: Show as picture.Size: 57mm.Replacement part number: TR618A. NoteThere might be a bit color distortions due to different computer resolutions.There might be a slight errors due to different hand measurement. Package included:1* Tire valve. Motor Vehicle Wheel Parts Vehicle Wheel Parts