Topeak FlashStand Slim Used by both professional and amateur riders alike Made using high quality materials and components Tested to ensure quality and durability Works with most 700c road bikes Works with non-drive-side Shimano Dura Ace, Ultegra or 105 crank arm Folds up compact enough to fit in a jersey pocket Material: Aluminum, engineer-grade plastic Weight: 4.86 ounces; weight capacity is 30.9 pounds