helping my brod. right angle grinder Nitto Kohki

specs:
Model MAGW-40
Air Pressure 85 psi
Air Consumption 24.1 CFM
Free Speed 13,000 RPM
Standard Wheel Requirement 4" depressed center
Hose Size Requirement 3/8" ID
Dimension 7-5/16" x 3-3/4"
Weight 3.3 lbs.
Spindle Size 5/8"
Horsepower 3/4 hp
http://www.noatex.com/pdf/cat.pdf
DALA NI SAKO BROD. NA SEA MAN. SELLING PRICE IS 5K NEGOTIABLE 09106036011