The Cross Check frame gives you options whether its using gears or hucking it singlespeed, or building the frame as a commuter or a touring bike.  You can even use the Cross Check as a cross bike!  And race it too!

 Features

• Tubing: 100% Surly 4130 CroMoly steel. Main triangle double-butted. TIG-welded
• Rear dropouts: Semi-horizontal dropouts with adjusters give you single-speed compatibility and wheel base adjustability. Gnot-rite spacing (132.5mm) allows you to run 130mm road hubs and 135mm MTB hubs
• Braze-ons: Bosses front and rear to take cantilever or linear-pull brakes, eyelets at the dropouts, rear rack bosses, dual water bottle mounts, downtube shifter bosses
• Seatpost diameter: 27.2mm
• Seatpost clamp diameter: 30.0mm, Surly Stainless included
• Headset: 1-1/8" threadless
• Bottom bracket: 68mm wide, standard English threaded (1.37" x 24t)
• Tire clearance: Room for tires up to 700 x 45mm. Go a bit smaller for fender clearance. 
  
• Chainring clearance: Manipulated stays so you can fit the size rings you want. Go nuts!
• Color: Hospital Foam or Gloss Black
• Weight: 56cm = 4.88 lbs (2.2 kg) Fork - uncut = 2.19 lbs (.99 kg)
• Fork: 4130 CroMoly steel. Lugged and brazed. Sloping crown, curved tapered legs