STI Double Round Prep Tool
STI Double Round Prep Tool is a metal-bond diamond grinding tool designed for planetary grinders, featuring two round diamond segments that provide greater contact with the surface for efficient concrete grinding, leveling, and preparation. Compatible with imported planetary machines, it is ideal for the metal-bond grinding stages of surface preparation, creating a consistent profile before applying coatings or beginning the polishing process.
Compared to the Single Round version, the Double Round Prep Tool offers two diamond segments for increased coverage and stability, making it an excellent choice for general concrete preparation. Available in soft, medium, and hard bond options with 16, 30, 60, and 120 grit configurations, it can be matched to different concrete hardness and project requirements. Use a soft bond on hard concrete and a hard bond on soft concrete, selecting coarse grits for aggressive stock removal and finer grits as you progress toward polishing.
Main Features
- Two round metal-bond diamond grinding segments
- Designed for grinding and preparing concrete surfaces
- Greater surface contact and coverage than single-round tooling
- Ideal for surface profiling before coatings or polishing
- Compatible with planetary grinders, including imported machines
- Available in soft, medium, and hard bond options
- Grit options: 16, 30, 60, and 120
- Coarse grits for fast material removal; finer grits for polishing preparation





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