Bartell 25 GRIT DOUBLE SEGMENT - PURPLE SLIDE-MAG - FOR SOFT TO MEDIUM CONCRETE

- Aggressive metal-bond diamond segment for the first cutting pass — 25 grit is the standard starting point for surface prep and polishing jobs. The cutting surface opens up the concrete, removes coatings, exposes aggregate, and creates the profile needed for subsequent grinding and polishing steps.

- Bartell's proprietary Slide-Mag quick-change mounting — uses a combination of wedge compression and embedded earth magnets to keep the tooling firmly attached to the grinder regardless of material being removed. Designed specifically for Bartell grinders and other machines equipped with the Slide-Mag fastening system. Not cross-compatible with Lavina dot/button platforms or Husqvarna Redi-Lock systems — confirm your grinder uses Slide-Mag before ordering.

- Double-segment configuration for tool life and refinement — two diamond segments per shoe create more surface contact than a single segment, extending tool life and leaving a more uniform scratch pattern. Best paired with larger / heavier walk-behind grinders (25" and up) where the extra contact patch helps the machine pull weight. The smoother cut from a double segment also reduces the work needed at the next grit step.

- Engineered for soft-to-medium concrete (Mohs 4–7) — Bartell uses a simplified 3-color bond system distinct from the Lavina/Elite scheme: Purple for soft to medium concrete (most slabs fall in this range, Mohs 4–7), Orange for medium to hard, Green for hard to very hard. Bartell includes a Mohs scratch test kit with its tooling sets specifically so contractors can confirm the right color for the job.

- The most common color choice on the truck — since the vast majority of commercial and residential concrete falls in the Mohs 4–7 range, purple is the default bond most Bartell users keep stocked in every grit. Run a Mohs scratch test before committing to a full set if you're working on an unfamiliar slab — if it tests above 7, step up to orange; below 4, the purple bond will still cut but may wear faster than expected.