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At a Glance
Why Choose This Product
Reaches sink rims, bowls and confined fabrication areas
Central water feed supplies water to the work surface
1.6 lb body reduces fatigue during extended operation
Accepts 3" and 4" discs plus 2", 3" and 4" rubber pads
Operates at 5,800 RPM while consuming 10 CFM
Compact design transitions between fabrication and field work
Product Information
The Alpha® AIR-300 and AIR-304 are compact polishing tools for wet sanding and polishing in areas that conventional equipment cannot easily reach. Their smaller bodies maneuver around sink rims, bowls, and confined fabrication areas, while the 1.6 lb weight reduces fatigue during extended use. The compact format also makes either model a practical pneumatic buffer for detailed stonework.
A central water-feed system supplies water directly to the work area. Both models operate at a maximum no-load speed of 5,800 RPM and accept 3" and 4" polishing discs along with 2", 3", and 4" rubber pads. With the appropriate rated accessory, each tool can serve as a wet sander or polisher for detailed fabrication work.
Each polisher consumes 10 CFM at 87 PSI and requires a minimum 3 HP air compressor. A 1/4" BSPT air inlet and 1/4" BSPP water inlet support the necessary connections, while the compact design allows the tool to transition between fabrication shops and jobsite applications.
The AIR-300 has a 5/8"-11 spindle, while the AIR-304 has an M14-2 spindle. Each pneumatic polisher includes a 30 ft air/water twin hose assembly, faucet and garden-hose adapter, 17mm wrench, 1 oz of rust inhibitor oil, and a reusable stackable toolbox.
Product Resources
Common Questions
The spindle thread is the primary difference. The AIR-300 uses a 5/8"-11 spindle, while the AIR-304 uses an M14-2 spindle. Their speed, weight, air requirements, and accessory capacities are otherwise the same.
Both pneumatic polishers accept 3" and 4" polishing discs along with 2", 3", and 4" rubber pads.
Each model requires a minimum 3 HP compressor and consumes 10 CFM at an operating pressure of 87 PSI.
Yes. Both models have a central water-feed system that supplies water directly to the sanding or polishing area.
The compact design is suited for wet sanding and polishing sink rims, bowls, and other confined areas that are difficult to access with a larger polisher or buffer.
Each model includes a 30 ft air/water twin hose assembly, faucet and garden-hose adapter, 17mm wrench, 1 oz of rust inhibitor oil, and a reusable stackable toolbox.
