Collapsible Silicone FunnelRefill with precision without wasting a drop.It's ultra-portable (collapsible fold up design) and made from silicone, which is plastic-free, food-grade safe & Project Green certified.Designed to fit into the bottle neck of all of Muc-Off Bike Cleaner and Drivetrain Cleaner bottles for easy refilling. Now it is super easy to refill your Bottle For Life with Punk Powder, Nano Tech Concentrate or Drivetrain Cleaner.Easy to clean and dishwasher safe.Expanded Height: 106mm x 43mm.Collapsed Height: 25mm x 43mm.Working temperature range of -40 °C to 200 °C.