Features and Benefits:�Metal clamp-in type valves make filling with liquid ballast easy.�By removing core housing, a large opening is provided for air or liquid fill.�625" valve hole.�Bend Angle: 65°�Length until Bend: 1 1/2"�Length after Bend: 3"�The Alligator TR 621 Air/water rim valve for agricultural tractors For Air/Water filling. TR621 A air liquid valve stems can be used for tractors and road grader service vehicles. Air liquid valves come in different lengths and bends.