Initially, it seems well put together and solid, and feels a lot more stable than pumping a single cylinder pump. However after a few uses there seems to be an internal leak meaning you can't use it. It hisses out air when connected to the valve and you can't pump in air at a higher rate than it leaks, making it redundant. My next idea is to put it in an oven at low temperature to see if the rubbers expand properly to create a seal.
Verified purchase: Yes | Condition: New
The two cylinders are very short , which would probably make one full length cylinder , and the air pipe is made of some type of rubber/ / plastic m which you could easily pinch and split it , or over time it would split anyway .
Verified purchase: Yes | Condition: New
good quality and pumps up tyre quickly with little effort
Verified purchase: Yes | Condition: New
It's good air
Verified purchase: Yes | Condition: New
Doesn't do the job it's supposed to,takes a lot of energy for little result,nowhere as good as a single cylinder,very very disappointed
Verified purchase: Yes | Condition: New
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