Compact 3/16-Inch Cutting Format
The 3/16-inch cutting diameter and 3/4-inch cutting edge support smaller grooves, slots, trimming cuts, templates, and detailed routing work.


Solid-carbide, two-flute straight router bit for general-purpose routing in solid wood and hard plastic. Its compact 3/16-inch cutting diameter, 3/4-inch cutting edge, 1/4-inch shank, and 2-inch overall length support controlled slotting, trimming, template routing, and detail machining.
This general-purpose solid-carbide tool combines two straight flutes with a compact 3/16-inch cutting diameter for controlled routing in solid wood and hard plastic.
Designed for compatible CNC routers and routing equipment using precision 1/4-inch collets or approved toolholding assemblies.
The Royce Ayr 2-Flute Straight Wood & Plastic Router Bit R56-21103 is designed for clean, controlled routing where straight-flute geometry is required. Its 0.1875-inch cutting diameter and 0.750-inch cutting edge provide a compact format for smaller grooves, slots, trimming cuts, templates, and detailed routing in solid wood and hard plastic.
Two straight flutes provide a neutral cutting action rather than the upward or downward force created by spiral geometries. The 0.250-inch shank fits precision 1/4-inch collets, while the solid-carbide construction supplies the rigidity and edge retention needed for accurate routing when feed rate, spindle speed, cut depth, and chip evacuation are correctly established.
With a 2.000-inch overall length, this tool is suited to compatible CNC and industrial routing equipment. Confirm toolholder condition, minimize unsupported projection, verify clearance, and match the machining parameters to the material and application before production use.
Technical Specifications
The 3/16-inch cutting diameter and 3/4-inch cutting edge support smaller grooves, slots, trimming cuts, templates, and detailed routing work.
Two straight flutes provide controlled cutting action without the upward or downward force associated with spiral router-bit geometries.
The solid-carbide construction supports edge retention, dimensional control, and stable routing when the tool is correctly held and operated.
Confirm that the spindle, router, collet, and toolholder accept an exact 1/4-inch (6.35 mm) shank. Inspect the collet and nut for wear or contamination, minimize unsupported tool projection, and verify clearance for the 2-inch overall length before machining. Straight-flute tooling should not be substituted for upcut, downcut, or compression geometry unless the required edge finish and chip movement are appropriate. Establish spindle speed, feed rate, pass depth, chip evacuation, guarding, and workholding for the material and machine.
The Royce Ayr 2-Flute Straight Wood & Plastic Router Bit R56-21103 provides a compact solid-carbide solution for general-purpose routing in solid wood and hard plastic. Its 3/16-inch diameter, 3/4-inch cutting edge, 1/4-inch shank, and 2-inch overall length support repeatable slotting, trimming, template, and detail-routing work.
Two straight flutes provide neutral cutting action and controlled material removal when the tool is installed in a suitable 1/4-inch collet and operated within appropriate machining parameters.