Model: 12a200 or 12c100 26" 21Speed Front Suspension MTB Frame: Aluminum Alloy (12a200) Hi-Ten Steel (12c100) D or Y type Over Size Diamond frame; Fork: Crowned type Suspension with pre-loaded spring; Crank Set: Aluminum Alloy or Plastic Coated fat type 28/38/48Tx170mm with semi Chain-Guard; Gear Set: Shimano 21Speed Index Light-Action Index Gear set; Brake Set: Powerful Disc or V-Brake system; H/B & Stem: Downhill Bend type H/B & Stem in Black E.D.; Wheel Set: Alum. 6061/T6 Alloy Rims with 26" x 2.10 MTB Tread Tire in Black; Others: Comfortable Two-Tone Color MTB Seat with QR type Seat Pin.