12 mm Verified Diameter
The verified 12 mm diameter is paired with a 30 mm cutting edge for repeatable blind-hole dowel drilling.


Royce Ayr D100.120R is a 12 mm right-hand carbide-tipped brad-point dowel drill from the D100 family. Its 30 mm cutting edge, 10 × 20 mm shank platform and 57 mm overall length are published Royce specifications.
Right Hand-hand industrial drilling configuration with a verified 12 mm diameter and 57 mm overall length.
For compatible CNC drill banks, CNC boring systems, and woodworking drilling equipment configured for right-hand tooling and the required machine interface.
The Royce Ayr D100.120R is a right-hand industrial woodworking drilling tool engineered for accurate production boring. Its verified 12 mm diameter and 57 mm overall length are retained directly from published or exact catalog data.
Royce Ayr lists this D100 configuration with a 30 mm cutting edge, 20 mm b1 dimension, 10 mm shank diameter, Z2 / two cutting edges, and 57 mm overall length.
Before production, confirm right-hand rotation, toolholder compatibility, insertion depth, runout, drilling depth, secure workpiece support, and suitable spindle/feed parameters for the material being machined.
Technical Specifications
The verified 12 mm diameter is paired with a 30 mm cutting edge for repeatable blind-hole dowel drilling.
The SKU-specific overall length and geometry are retained without importing unsupported dimensions from adjacent Royce drill families.
D100.120R is configured for right-hand boring positions and should be installed only in the corresponding machine station or spindle direction.
Verify that the boring head, spindle, chuck, or adapter is intended for right-hand tooling. Confirm clean toolholding, minimal runout, correct insertion, appropriate drilling depth, secure workpiece support, and suitable spindle/feed parameters before production.
Royce Ayr D100.120R combines a 12 mm cutting diameter, 30 mm cutting edge, right-hand rotation, Z2 geometry, carbide-tipped / HW construction, and the D100 10 × 20 mm shank / 57 mm overall-length platform.
It is intended for accurate industrial woodworking drilling on compatible CNC drill banks, boring equipment, and production systems.