YAEOSNSI Dual Head Bike Track Pump Tyre Air Pump Valve Adapter Bike Pump Accessories Multi-use Connector Head Pump Adapter for Bicycle Bike Replacement Accessories

Brilliant

Bought this a month ago and have just come to use it and it leaks air. Then find that the purge valve/plug just falls out!Will be pursuing a refund as this is useless

Where do I start?The input stem is so short it only JUST fit in my air line with a lot of will power, however I didn’t actually get chance to test it as the air didn’t flow from the presta fitting at all; then the bleed valve popped out. Waste of money.

Worked well, time will tell how robust it is

Exactly what I was after. Delivered quickly at a very good price. No complaints.

A really nice addition to my electric pump as I can use quick release lever now rather than have to screw adapter onto valve which often resulted in unscrewing presta valve core when removing

In theory this is a great idea no need to cut off a hose to fit this which is why i bought it . However the actual device does not work The air comes out of the not used opening . I tried it on both presta and schrader valves

I bought a foot pump for £5 in a half price offer, but this one itself is closed to that price despite being just an adapter ;) However, you get what you pay for. It is the only one that works like a charm for presta valves - I have tried many.