Bicycle single Speed Fixed-Gear crank set 38Tx 170mm squareTaper Light AlloyForged crankset 38T single speed crankset . 170 mm forged crank arm Fits single speed .3/32" chain , 9/16" pedals From new bicycle so they have minor tool marks .but they have never been used. Same day shipping ( priority mail ) order by 3PM! Only shipping to 48 states !