Spoke Spanner - SW-3 - from Park Tool USA

Park Tool Spoke wrenches / keys are vinyl coated in one of four colors indicating the size at a glance.

Park Tool Spoke Wrenches are marked "Park Tool USA."

• SW-0 (Black) 80 ga./.127" nipple/3.23mm 
• SW-1 (Green) 80 ga./.130" nipple/3.30mm
  
• SW-2 (Red) 80 ga./.136" nipple/3.45mm
  
• SW-3 (Blue) 105 ga./.156" nipple/3.96mm  (this one)
  

Weight: 0.028kg (.05lb) 

Park Tool Reference: SW-1

About Park Tool:
Park Tool has been manufacturing bicycle specific tools since 1963.

Based in St. Paul Minnesota, USA, Park Tool is the world's largest bicycle tool manufacturer.

A long-term dedication to quality, innovation, and customer service has made Park Tool the first choice of professional and home bicycle mechanics around the world.