#860270 - Includes 1-30" extension rod, 4-60" extension rods, 1-24" round nylon brush, and 1-24" round silica carbide brush Specs: Variable speed, reversible operation, on/off controls and pressure regulator assembly, 7 CFM@90 PSI compressor required for operation. 12+ CFM recommended Options (pictured): #860282 Guide System-Multi positioning legs with wheels allows you to center brush in duct. Optional