Versatility: the width of the clamp can be automatically adjusted according to the oil filler;the transparent lower chamber of the funnel shows the passage of oil;it helps to prevent overflow; it is suitable for the oil ports of various vehicle models;the thickened large diameter funnel adopts anti-static, anti- and high-temperature plastic, which has no peculiar smell and is not easy to leak. Operation: the connector adopts adjustable design, tight connection and simple operation.No artificial support is needed,which saves time and .Easy to install. Provides fast oiling without spilling or waste,saving time and money.