Big Horn 19666 Brass Router Template Guide for Routers 1617EVSPK, 690LR, 616

The Big Horn 19666 is a high-precision brass router template guide made to replace Porter‑Cable’s OEM guide bushing #42054. Engineered with an inside diameter (I.D.) of 5/16″ and an outside diameter (O.D.) of 13/32″, it provides a reliable, fixed offset for routing along patterns and jigs. Constructed from solid brass, this guide is both durable and vibration-resistant, giving you clean, repeatable cuts on wood, plastic, and other jig materials. It mounts into router bases that use the same 1‑3/16″ base plate center opening as the original Porter‑Cable bushing, making it compatible with a variety of router brands and model lines. Ideal for precision applications like hinge mortising, inlay work, staircase stringer trimming, and decorative routing, the 19666 enables accurate, professional-level craftsmanship. With its long-lasting brass design, this guide bushing can drastically reduce wear compared to softer metals, maintaining tight tolerances for many routing sessions.