I was at my LBS and needed to use their bicycle pump. I found it to be the easiest and most effective way of filling up air in shraeder and presta valves. You simply put it on the valve and start pumping. Their pump was a black burn, but I searched everywhere and couldn't find the same. perhaps they they made it. there is no hassle in getting it in perfect either. it slips in easily and pump air in. any idea?