Product Details HB10D 26in 21-Speed Mens MTB Tundra - 26" 21-Speed Men's MTB. features a hi-ten steel, hydroformed frame; Kolo 5200 suspension fork; steel linear pull brakes; alloy rims; Enzo 21-speed twist shifting; padded seat with stitched sides; alloy quick release seat for easy adjustment; Kolo front load stem and Krayton grips