CNC Spindle 2.2Kw ER20 Water Cooled 80mm For Wood 220V 24000RPM

The spec is confusing, is this a water cool or an air cool?
What is the actual weight of the spindle? Does it contain 4 ceramic bearings?

Kamwa Iakai, 11/05/2018
5 of 5 Stars5 of 5 Stars
₹16,500.00  ₹14,680.00
Sale 
-11%