<p>Novatec A271SB and F372SB hubs are designed for road bikes with 20 or 24 holes. They feature sealed bearings for smooth operation and are compatible with 7, 8, 9, 10, and 11-speed gear systems. The hubs have a weight of approximately 166g and 334g, respectively, and come with quick release. They are available in red color and have an axle material of AL7075. The outer locknut diameter (O.L.D) is 100mm for the A271SB and 130mm for the F372SB. The axle size is Ø 9*140mm for the A271SB and Ø 10*140mm for the F372SB. The pitch circle diameter (P.C.D) is 38mm for the A271SB and 49mm for the F372SB.</p>