How to use OKO from a drum

A wordless video for the World of OKO workshop users. Watch it for clear instructions. The 25 litre/ 6.6 US gallon drum and all-alloy pump are ready-to-use; and are designed to overcome the hassle of competitors' messy 18.9 litre/ 5 US gallon pails and 'assemble-yourself' pump kits. Unscrew the drum cap, insert the pump, remove the valve core and start injecting - against tyre pressure of up to 60 psi/ 4.2 bar!