Universal set for easy, efficient and mess free refilling during cooling system bleeding work Includes five rubber seal adaptors (31, 35, 40, 42, 45mm) to suit most vehicles Also includes one rubber tapered cone adaptor for variable applications and multi-purpose use Enables vehicle coolant filler point to be raised, assisting with coolant system bleeding and removal of air pockets common in modern passenger vehicle applications 8 piece set Step 1: Choose an adaptor to fit the expansion tank or radiator opening Step 2: Apply the suitable adaptor and fit the screw body on to it and tighten to obtain a seal Step 3: Fit the funnel to the tightened screw body Step 4: Fill the funnel with coolant (you will notice air is bled out via the by-pass tube) Step 5: Once the cooling system is full, the flow from the funnel can be switched off to avoid coolant spillage