Luo ke 80 Grit 3 Different Shapes Head Mounted Stone Point Abrasive Grinding Wheels Bit Set with 1/4" (6mm) Mandrel for Rotary Tools: Amazon.com: Industrial & Scientific
Mounted Point Grinding Wheels - Shape A25. Size 1" x 1" - Shark Industries
Abrasive Mounted Points - W Parallel shape Pink Vitrified points