700x28 Pro One TT Bicycle Tire X-Treme XB-502 the rectangular slot that is

the rectangular slot that is milled into both the shaft and hub

Let Monster Scooter Parts be your source for the latest bicycle tires from Sunlite with this 27"x1-1/8" Black CST732 Bicycle Tire

but one uses a decimal and the other has a fractional component

Green seat tube for the eZip 450

38mm steel tubing

700x28 Pro One TT Bicycle Tire X-Treme XB-502 the rectangular slot that isCombining souplesse , speed and control at the highest level into the most advanced tire Schwalbe has ever created. Smooth tread road race tire with light should siping from improved control and new Addix Race compound for unmatched control. Lower rolling resistance, lower weight, race day ready for competition time trials and triathlon. Addix Race single compound construction. TR TLR TLE Tubeless compatible casing, sealant required. Schwalbe: 11653973