Infinity Cutting Tools on Instagram: "The Lock Miter Master Jig is a patented, precisely machined tool that aids in setting up lock miter router bits on your router table. Unlike setup blocks,
Amazon.com: Rockler Router Jig – 45 Degree Lock Miter Bit – 3/8” to 3/4” Thickness – Sharpened, Anti-Stick Woodworking Miter Router Bit – 1-3/4" D x 3/4" H x 1/2" Shank Lock