If it wasn't expected, I wouldn't have believed the package contained a pump. Instructions rather misleading - initially lost all pressure and had to dash to Halfords for surly young man to take it to pieces and tell me how it worked. You have to unscrew the grey connector cover, switch around the inner piece, put it to the loosened presta valve and flick up the tab to seal onto the valve. Does that make sense?? Once attached, it worked very well. So five stars for quality and one less for rubbish instructions. Maybe a pressure gauge would have added the icing but still worked well. I'm pleased with my purchase.