This center water feed GPW-218 4500rpm wet air sander features a rear exhaust and reversible side handle. Lightweight and compact design which is suited to single handed operation.  Low vibration and noise with excellent performance.
Pneumatic Water Stone Sanders,Polishers, Air Wet Sander
 
SPECIFICATION
Rear Exhaust, ON-OFF Switch
Spindle Size : 5/8-11, M14
Pad Size : 3" or 4"
Max. Free Speed : 4,500 rpm
Max. Horse Power : 0.43 HP (321W)
Weight : 1.23 kgs
Length : 234 mm
Air Cons : 0.45 m3/min (15.9 scfm)
Hose Size (I.D.) : 6.5 mm(I.D.)
Sound Pressure : 84 dBA
Vibration : < 2.5 m/sec2
Air Pressure : 90 psi (6.3 kg/cm2)
Packing (1 Carton) : 8 pcs/1.4 cu.ft/G:22 kgs 
* with 150 cm Air Hose / Water Hose *
 
FEATURES
Low vibrate and noise with excellent performance.
Gravity casting housing carries long duration of tool.
Centre water feed function reduces dust, and improves environment protection.
Water valve can be adjusted for variable water-flow.
Includes a reversible side handle, exhaust muffler, air hose adapter and water valve with hose adapter.
Both 3" and 4" pads are available.
Lightweight and compactable design are also suitable for single-hand operation.
Rubber sleeve keeps hands from getting cold. 
Don't use polishing pads bigger than 100 mm (4"). The 125 mm (5") is easy to cause damage to the tool.