Use: Polish glass to produce professional looking edges. Size: 4-1/4" x 2-1/2" x 1-1/4". Grit (Colored Pad): - 60 grit - green pad (corse). Features: - Flexible sponge-like blocks with a layer of fine diamond grit on one side of sponge. - Start with coarse pad & work down to finer grades to reach top quality finish. - Great for large or very small pieces (all hot glass especially beads) that do not maneuver well on grinder. - Use before or after firing. - Will not chip glass (especially iridized glass). - Reuseable over and over.