Dynabrade 52379 4″ (102 mm) Dia. Straight-Line Type 1 Extension Wheel Grinder 1 hp, 12,000 RPM, Rear Exhaust, 3/8″-24 Spindle Thread

Type 1 Wheel Grinder, for cleaning metal, grinding and smoothing weld seams, removing imperfections before painting. 4″ Diameter, Straight Line, 1 hp, 6″ Extension, 12,000 RPM. Accepts optional 4″ diameter Type 1 Wheel, with 3/8″ center hole (maximum wheel width of 1/4″). Governor-controlled motor maintains RPM under heavy load; rear exhaust. Safety-lock lever is included on all models. Standard cushioned grip enhances operator comfort and allows additional control.