Dremel 1/4 In. V-Groove Router Bit 640 from Dremel - Acme Tools
Dremel 640 V-GROOVE Router Bit — widgetsupply.com
Dremel Router Bit HSS (640) - Rotary Tool Accessory for Inlaying and Routing in Wood, Laminate, Pastic and More, Cutting Diameter 6.4 mm - Storage Drawer Units - Amazon.com
Dremel Mini Saw Attachment 670 | Dremel Mini Circular Saw | Multi Tool Attachments - 670 - Aliexpress