Includes all the accessories, and tough aluminum case for any mini grinding need. No load grinder speed is 12,000 RPM. Set includes: 12 volt DC Mini Grinder & DC transformer, 10-pc. grinding stone set, 8-pc. sanding drum set, 3-pc. brush set (2 wire & 1 12 volt DC Mini Grinder & DC transformer 10-pc. grinding stone set 8-pc. sanding drum set 3-pc. brush set (2 wire & 1 nylon) 5-pc. cutting wheel set 2-pc. polishing wheel set 1-pc. engraving bit 4-pc. drill bit set 2-pc. mandrel set 1-pc. Whetstone 20-pc. diamond polisher set 3/64", 3/32", 7/64" and 1/8" collets Aluminum case Includes DC transformer and tough aluminum case 10 pc. grinding stone set 8 pc. sanding drum set 3 pc. wire brush set 5 pc. cutting wheel set 2 pc. polishing wheel set 1 pc. engraving bit 4 pc. drill bit set 2 pc. mandrel set 20 pc. diamond polisher set No load grinder speed is 12,000 RPM Comes with 3/32" and 1/8" collets