Valve Stem Types
TR-4 - Short straight metal stem
TR-6 - Straight metal stem (8mm dia)
TR-13 - Straight rubber stem (11.5 mm dia)
TR-15 - Straight rubber stem (16mm dia.)
TR-87 - Short 90 degree metal stem (10mm dia)
TR-87C - Tall 90 degree metal stem (10mm dia)
PV-78 - 45 degree metal stem