Precision binding trimmer with adjustable brass knobs and sliding guides for accurate cutting width and depth control, creating clean edges on ABS binding, wood purfling, and decorative inlays while reducing chipping and waste. Compatible with most 1/4-inch collet compact trim routers; slotted mounting holes allow secure installation and flexible adjustment, suitable for acoustic and electric guitar binding work. Solid aluminum alloy construction with pressure blocks to hold binding strips firmly during routing; can be secured to a workbench with a standard G-clamp for improved stability and slip-resistant operation. CNC-machined from anodized aluminum alloy for excellent durability and long-term workshop use; easy setup makes it suitable for both beginners and professional luthiers. Supports rough and fine trimming for guitar binding, purfling strips, decorative inlays, and edge binding work; adjustable guide accommodates various strip widths, reducing the need for multiple trimming tools.