AIR DIE GRINDER KIT (3mm & 6mm) (15pcs)

Reference: ADG-615

Condition: New

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It sounds like you’re looking at a standard 15-piece pneumatic (air) die grinder kit. These are the "Swiss Army knives" of metalworking and DIY—compact, high-speed, and incredibly versatile since they include both the 3mm (1/8") and 6mm (1/4") collets.

Here is a breakdown of what usually comes in that 15-piece box and how to get the most out of it.

What’s Usually Inside the Box

While brands vary, a typical 15-piece kit is organized like this:

1x Air Die Grinder: The handheld pneumatic tool.
2x Collets: One 3mm (1/8") for precision work and one 6mm (1/4") for heavy-duty grinding.
10x Mounted Grinding Stones: Usually 5 for each collet size, in various shapes (conical, cylindrical, ball).
2x Hand Wrenches: Used to tighten and loosen the collets to swap bits.
1x Nipple/Connector: The 1/4" NPT air inlet plug to connect to your hose.

Quick Specs to Keep in Mind

Speed: Most run at roughly 20,000 to 25,000 RPM.
Air Consumption: These are "air hungry." You’ll typically need a compressor that can output at least 4 CFM at 90 PSI for continuous use.
Exhaust: Most budget kits have rear exhaust to keep debris away from your face, but check if yours is front-vented.

Pro-Tips for Longevity

The Golden Rule: Add 2–3 drops of pneumatic tool oil into the air inlet before every use. These tools spin at massive speeds; without oil, the internal vanes will wear out in hours.

Safety First: Because these spin so fast, stones can shatter if they're cracked or if you apply too much side pressure. Always wear eye protection.
The "Burr" Upgrade: The stones included in these kits are okay for light sanding, but if you want to actually "carve" metal, I highly recommend picking up a set of Tungsten Carbide Burrs. They are game-changers for speed and finish.