PHBE/PHB parts, PHBH parts, PHBL parts, PHF parts, PHM Parts, VHSA / VHSB / VHSC parts, VHSB 34 ROTAX MAX parts, VHSD / VHSG parts, VHSH parts, VHST parts. Sold individually, a pair is used in each carburettor Available in weights 3.6, 4 and 5.2 grams.