The 3M Trizact Diamond HX Blue Disc (model 27507) is a 5-inch diamond abrasive disc designed for intermediate finishing and pre-polishing of stone, marble, granite, and terrazzo floors. It is used with low-speed rotary floor machines and automatic scrubbers.

The disc features 3M's Trizact technology, which uses precisely-patterned composite abrasive structures distributed uniformly across a flexible backing. As the structures wear during use, fresh sharp diamond abrasive is continuously exposed, providing consistent, fast cutting action throughout the life of the disc. This design results in uniform scratch patterns and predictable, repeatable results across the floor surface.

The Blue designation indicates an intermediate grit level in the Trizact Diamond HX color-coded system, making it suitable for use between coarser and finer finishing steps in a multi-step floor restoration or maintenance sequence. Typically sold in boxes of 4 discs.