This is a brand new all-alloy calibrated application drum pump which easily fits on to the threaded opening of the OKO Puncture Free Bike or OKO X-Treme 25 litre tyre sealant drums.
The pump has a collar which is adjustable to limit the length of stroke, and markings on the shaft measure the stroke required to dispense 50ml, 100ml, 150 ml, 200 ml, or 250 ml of sealant. This covers all bicycle tyre size requirements (and larger vehicles). There is a valve attachment to allow application to (removable-core) Presta valve stems. The normal nozzle clamps on to a Schrader valve core. A new tap feature allows you to prime the pump and apply without any mess.
