Sapim butted spokes have two major benefits: less weight and more strength! Technological advances using cold forging (SAPIM Forging Technology) 'stretch' the spoke, retaining the linear molecular structure of the material, thereby increasing the spoke strength at the middle by at least 48%. As an added bonus, the thin middle section of the light Laser and Race spokes also provides better shock absorption. Length in the title. Used on Dahon lightweight models.