SPX Features: -Heavy-duty steel frame with two layers of powder coat paint to prevent rust.-Patented friction brake with micro-adjust safety knob and emergency stop.-Heat treated Cro-Moly Axle spins on sealed German made SKF bearings.-Aluminum alloy pedals with toe straps.-Can be switched to SPD's.-Stainless steel with engraved scale handlebars.-Hexagonal shape creates a very rigid connection.-Micro-adjustments to fit all sizes and styles.-Top quality Velo Saddle. Specifications: -French made Hutchinson 5PK V-ribbed automotive belt.