Dotco 10-20 Series Router. Dotco 10-20 Series Routers feature a roll valve that gives easy for convenient operation and tremendous power for the toughest operations. Dotco 10-20 Series Routers also feature a unique governor design that assures minimum air consumption, maximum power at the correct speed and a long motor life. Dotco routers give their operators a durable, satisfying experience for every routing need. These tools are designed with precision in mind our full range of routers offers a variety of sizes, speeds and accessories to perfectly match your work. Exhaust: Front Shank Diameter Capacity: 1/4” Free Speed (rpm): 25,000 Type Housing: Aluminum Weight: 1.8lbs/0.82kg Overall Length: 6.3”/160mm Air Inlet Size: 1/4”