1.Grit 240 & 400, 10-inch outside diameter,quality electroplated diamond coated flat lap disk wheel.
2.The flat lap wheels have a 1/2-inch arbor hole for Angle Grinder.
3.They are absolute flat and parallel to meet the most exacting faceting requirements.
4.For grinding and polishing, glass, rock,stone, 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: 2 x Diamond Disc
Material: Metal,Diamond Coated
Color: Silver Tone
Outer Diameter: 250mm/10-inch
Arbor Hole Diameter: 12.7mm/1/2-inch
Thickness: 1mm/0.04-inch
Grit: 240,400