Metal stems. If you don't already have TPMS, you probably will sooner or later. The metal stems will last as long as your tires.
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Steve & Diane
2015 Montana 3402RL
2017 F350 Super Duty Lariat 6.7 Powerstroke, Super Cab, Long Box, 4WD DRW
18K PullRite Super 5th ISR
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