BV Bike Pump BV-GF55P/BV-GF31P Valve Replacement Twin Head Schrader & Presta

BV Bike Floor Pump BV-GF55P/BV-GF31P accessories, Twin Valve Head Replacement

No Leaks, Easy-Switch.

Presta, Schrader, Dunlop Compatible.

ONLY use for BV-GF55P and BV-GF31P.