10x weaker than the usual paper clip. Pretty much like slender copper wire. Most wheels I see are drilled for Schrader and have an insert for presta valves, Therefore the wheel toughness argument doesn’t hold up, and I’ve never ever had a dilemma that has a Schrader valve which might https://tripsbookmarks.com/story19778078/getting-my-presta-addons-to-work