NJS certified track stem originally designed for Women`s Keirin racing in Japan but equally suited for any track or fixie buildNegative 17° angle is designed to be parallel to the ground on track bikes for an aggressive stanceMade in Japan from high quality forged aluminumStem can be flipped for positive or negative angleRoad1-1/8`10025.4-17°SilverAluminum40UPC/EAN/GTIN: 4582350845907