Jitsie economic cranks set is the most polivalent to adapt to any Biketrial and Trial bikes. Forged in aluminium 7075 with T6 termic treatement, that offers a high strong and resistance. Available in four different longs: 160 mm, 165 mm, 170 mm and 175 mm. For ISIS type bottom brackets. Offset 33mm. For 1.37x24tpi threat freewheels. Weight according crank long (see product details).