Bests & Worsts Reviews from Amazon

there's a couple of problems with these pumps, as other reviewers have pointed out for this pump and the original sport. - the head can be difficult to get a seal with, especially on the presta side. it may take several tries before being able to get air to flow, - the dual head is large, making it difficult to get onto smaller wheels with closer spokes, - the hose material is a cheap plastic, not rubber - it quickly starts to crack wherever it's bent (near the outlet and where it's stored over the handle) and soon blows out. their support company, todson, refuses to warranty the hose even though it's a material defect. instead of paying them a third to half the cost of a new pump, get 3/16" fuel line from your local auto parts store. fits perfectly, will last a lifetime, and only costs about two bucks!