Product category: Router bit (round-bottom / round-nose cutter) Shank type: Straight shank (1/2") Key benefits Precise round-bottom profile: Designed to cut smooth, consistent half‑round grooves and channels for joinery, decorative work, or routing operations. Easy compatibility: 1/2" straight shank fits routers and cutters that accept 1/2" tooling, allowing stable mounting and reduced chatter. Multiple sizes for flexibility: Select the exact cutting width/depth you need from the listed models to match your project without compromising finish quality. Blue finish for quick identification: Distinctive blue-coated cutters make tool selection faster on the workbench. Models and dimensions (available) 1/2" × 25.4 mm — blue round-bottom cutter 1/2" × 28.6 mm — blue round-bottom cutter 1/2" × 31.75 mm — blue round-bottom cutter 1/2" × 34.9 mm — blue round-bottom cutter 1/2" × 38.1 mm — blue round-bottom cutter 1/2" × 41.3 mm — blue round-bottom cutter Function and performance notes Intended for routing round-bottom grooves, flutes, and channels. Straight shank provides secure clamping in 1/2" collets and collet-style chucks. Available sizes let you choose shallow or deeper half-round profiles to suit material thickness and design needs. Typical applications Cabinetmaking and furniture: create recessed channels for decorative trim, fluting, or to house lighting/tubing. Signmaking and carving: rout clean rounded grooves and lettering details in wood or composite boards. Joinery and shop fixtures: cut half-round channels for wiring, pipes, or to form mating profiles in assembly work. Practical considerations Verify your router accepts a 1/2" straight shank before use. Choose the model size that matches the groove width/depth needed for your project. Use appropriate feed rates and bit speeds for the material being cut to prolong cutter life and maintain finish quality. Includes only the listed straight-shank blue round-bottom cutter models as specified above.