Harbor Freight portable sand blasting gun kit by Central Machinery.
$29.99 plus tax maybe a little cheaper if you can find a coupon. I got it for my son to use on a old 750R Ninja he is slowly fixing back up. We tried it on a couple different items to see how it would go. The old Edelbrock intake manifold had the dirt coming straight off with no problem. The master cylinder has been laying around in the weather for a couple years so I didn't expect much with it but it did take the loose stuff off. Looks like it's going to do a good job on the wheels of that old Ninja. I have to say I am totally impressed with it.
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