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Theirs no mention of 2-Way / Dual Action Bicycle Pumps for these are the latest technological development, most pumps mentioned are not used that much anymore — Preceding unsigned comment added by 121.218.206.65 (talk) 19:55, 17 April 2013 (UTC)Reply
Hmmm. Of the five types of pumps listed in the second paragraph, the last one is "Double action". Then, in the section on hand pumps, the fourth pargraph states "Some of the most efficient pumps are double action pumps. By sealing the piston in the cylinder at both ends they can force air into the tire on both strokes." Are we missing something? -AndrewDressel (talk) 20:53, 17 April 2013 (UTC)Reply
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