RYOBI ONE+ HP 18V Brushless Cordless Compact 1/4 in. Right Angle Die Grinder (Tool Only) with 40 Grit Flap Wheel Set (5-Piece) PSBDG01B-A91FW540 - The Home Depot
Makita USA - Product Details -781039-9
Pneumatic 1/4 In. Professional Die Grinder with 4 In. Extension