[Grinding head kit]contains 10 different styles of grinding heads, used with chucks of different sizes, suitable for grinding, polishing, hole repair, light welding seam grinding and sharpening. [High power] pneumatic die grinder kit has a free speed of up to 25,000 RPM,with 1/4" and 1/8" collets, which is more suitable for use in narrow spaces.
eBay