The Prep/Master Junior Grinder

The Prep/Master Jr. grinder by STI works extremely well in small, hard-to-reach areas that requires a more compact design — perfect for residential garage floors.

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The Prep/Master Jr. grinder by STI works extremely well in small, hard-to-reach areas that requires a more compact design — perfect for residential garage floors. This grinder is very aggressive, yet extremely easy to operate due to the smooth operation of the STI rotary gear system. In addition, the low price of the Prep/Master Jr. is very affordable and fits any project budget.

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