Microjig 1/2 in. Shank Relief Router Bit is expertly designed to create precise 1/2" relief grooves in materials, preparing them ly for use with the MATCHFIT Dovetail Router Bit. This innovative bit efficiently removes up to 55% of waste material, significantly reducing the stress on dovetail bits and enhancing their performance and durability. Its laser-etched depth guide ensures quick and easy size identification, making your routing tasks more convenient and accurate. With this relief router bit, you can expect improved groove quality and extended tool life. Model Number: MB-050-025ST