PORTER-CABLE 4-1/2 in. Dia. 6A Grinders, 2-Pack at Tractor Supply Co.
Amazon.com: Gedu Air Die Grinder with 1/4" and 1/8" Collets Air Compressor Tool, Air Straight Grinder and Air Angle Grinder (straight grinder) : Tools & Home Improvement
PORTER-CABLE 1/4 in. Air Right-Angle Die Grinder at Tractor Supply Co.
Porter Cable Right Angle Die Grinder 1/4 PXCM024-0275 | eBay