5 mm Verified Diameter
The verified 5 mm cutting diameter is paired with a 43 mm cutting edge for repeatable blind-hole dowel drilling.


Royce Ayr D108.050R is a 5 mm right-hand solid-carbide brad-point dowel drill from the D108 family. Its verified 70 mm overall length supports precision blind-hole boring in compatible woodworking production systems.
Right Hand-hand brad-point dowel drill with a 5 mm cutting diameter and 70 mm overall length in the Royce Ayr D108 family.
For compatible CNC drill banks, CNC boring systems, and portable woodworking machines configured for the appropriate D108 shank platform and right-hand rotation.
The Royce Ayr D108.050R is a right-hand solid-carbide brad-point dowel drill engineered for blind-hole drilling in particleboard, MDF, and solid wood. Its 5 mm cutting diameter supports repeatable dowel-hole production on compatible CNC drill banks and portable woodworking machines.
Royce Ayr lists this D108 configuration with a 43 mm cutting edge, 27 mm b1 dimension, 10 mm shank diameter, and 70 mm overall length. The verified configuration uses Z2 / two cutting edges.
Solid-carbide construction provides maximum wear resistance and strength for production dowel drilling. Royce Ayr also uses an end screw for height adjustment. Before production, confirm right-hand rotation, toolholder compatibility, insertion depth, runout, drilling depth, and machine parameters for the material being bored.
Technical Specifications
The verified 5 mm cutting diameter is paired with a 43 mm cutting edge for repeatable blind-hole dowel drilling.
The D108 family is configured around its verified shank geometry and 70 mm overall length for compatible production boring systems.
Solid Carbide Tooling is paired with right-hand rotation in the verified D108.050R configuration.
Verify that the boring head, spindle, chuck, or adapter accepts the required shank and is intended for right-hand tooling. Confirm clean toolholding, minimal runout, correct insertion and height adjustment, appropriate drilling depth, secure workpiece support, and suitable spindle/feed parameters before production.
Royce Ayr D108.050R combines a 5 mm cutting diameter, 43 mm cutting edge, right-hand rotation, solid carbide tooling, and the D108 10 × 27 mm shank / 70 mm overall-length platform.
It is intended for blind-hole drilling in particleboard, MDF, and solid wood on compatible CNC drill banks, CNC boring equipment, and portable woodworking machines.