SPECIFICATIONS Frame : Hi-Ten Steel Fork : Suncross Suspension Bottom Bracket : Sealed Cartridge Crank Set : Steel Plastified 44T, 170mm Pedal : PVC Freewheel : 18T Chain : 1/2 x 1/8 Inch Rims : Suncross Double Wall Alloy Rim 36H Hubs : Steel 36H With Front QR Tires : 27.5 x 2.10 Brake Set : Mech. Disc Brakes Head Set : Neco Threadless Handle Bar : Steel Grips : Soft Rubber Compound, Smaller Diameter Stem : Alloy Threadless Seat Post : Steel 28.4mm Saddle : Black Seat Pin : Alloy QR