1 1/4 Guardless Elite Diamond Grit Disc , Capps Manufacturing 289
 
This disc is designed to be used without a guard. It has a radius edge around the whole disc to protect the soft tissue.
The disc has a recessed back side to make the head more low profile and help fit into the tight spots in the back of the mouth.
The cutting surface is 1 1/4" in diameter.
Will not fit inside any of our disc guards.
1/4-28 threaded shank.