• Rugged ball bearing construction, hardened and ground bevel gears.
• Built-in speed regulator and muffled rear exhaust.
• 51-239-2 and 51-238-4 furnished with wheel guard, side handle and wrenches.
• Air requirements: 90 PSI 3/8" I.D. hose.
• 1/4" NPT air inlet.
• 51-305-1 includes wrenches and lightweight plastic housing
• 3/8 - 24 (4" dia. pad) spindle, or 5/8"-11 (7" dia. pad) spindle.
• Grinding wheel see Page 699.