GSC Power Division Viton valve stem seals, 6mm, are offered as a set of 40 for Audi R8 V10 and Lamborghini Gallardo/Huracan V10 applications. The listing specifies the Viton material, the 6mm dimension and the intended V10 fitment, supplying the exact count and sizing needed for valve stem sealing on those engines.
GSC P-D Audi R8 V10 / Lamborghini Gallardo/Huracan V10 Viton 6mm Valve Stem Seals - Set of 40