1. 8-inch outside diameter, 400 Grits, quality electroplated diamond coated flat lap disk wheel.
2. The flat laps wheels have a 1/2-inch arbor hole for Angle Grinder.
3. They are absolutely flat and parallel to meet the most exacting faceting requirements.
4. For grinding and polishing jewelry, glass, rock,stone, granite,etc.
5. Recommended for rough and fine grinding on faceting material plus general lapidary grinding when precision is required.

Specification:
Product Name: Diamond Disc
Package Content: 1 x Diamond Disc
Weight: 256g
Material: Metal,Diamond Coated
Color: Silver Tone
Outer Diameter: 200mm / 8-inch
Arbor Hole Diameter: 12.7mm / 1/2-inch
Thickness: 1mm / 0.04-inch
Grit: 400